Bird Banding Blog

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All banding, marking, and sampling is conducted under a federally authorized Bird Banding Permit issued by the U.S. Geological Survey’s Bird Banding Lab (BBL).
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Fall Bird Banding 2025 - November & Season Totals

Daylight Saving Time ended on November 1st, which reduced the time we were able to audio-lure in the morning for owls by an hour on the last three banding days of the fall.  Despite this being the last week of banding, we were affected by precipitation. The last day was scheduled to be November 9th, but rain and snow crept into the forecast, so it was moved to November 8th. Temperatures were still a bit above normal on the 2nd and 6th, and cooler and more normal on the 8th. Migration in the first week of November usually slows down, with species diversity reduced as well. So it was surprising that seven new species for the season were captured. On the down side, kinglet numbers did not increase and we finished the season well below last year for both species. 

Sunday, November 2, 2025

A chilly start with fog gave way to warmer temperatures and sunny skies. The Field Sparrow today was the second of the season. The early morning light in the photo below gives the bird richer colors than normal.

Hatch-year Field Sparrow


Three new species for the fall were captured today, two of them fairly common; White-breasted Nuthatch and House Finch.

Hatch-year female White-breasted Nuthatch

Hatch-year female White-breasted Nuthatch

Some hatch-year male House Finches don't have any red in their plumage in late fall, so their sex cannot be determined by plumage characters. Luckily, the one today had plenty of red.

Hatch-year male House Finch

The Yellow-bellied Sapsucker captured today was a highlight for two reasons. I have captured very few over the years (this was only my 15th in 28 years). And, they typically migrate through our area from late September through mid-October. The brown barring on the back indicate that it is a hatch-year, and the lack of red on the throat indicates female.

Hatch-year female Yellow-bellied Sapsucker

Hatch-year female Yellow-bellied Sapsucker

Hatch-year female Yellow-bellied Sapsucker

The three Fox Sparrows today was the peak for the season, as was the 8 Golden-crowned Kinglets. 

Banding Results for November 2, 2025

5.25 nets open 5:30 - 6:30 (5.25 net hrs) audio luring for owls
16.5 nets open 6:30 - 12:30 (99.0 net hours)
Temperature: 35-54
Cloud Cover: 20-0%
Wind Direction: Calm-SW
Wind Speed: 0-3-5 mph
Barometer: 30.20-30.20
Precipitation: Fog
Sunrise: 7:06

Yellow-bellied Sapsucker - 1
Downy Woodpecker - 2 (plus 4 recaptured)
[Black-capped Chickadee - 1 recaptured]
Ruby-crowned Kinglet - 1
Golden-crowned Kinglet - 8
White-breasted Nuthatch - 1
Winter Wren - 2
Hermit Thrush - 5 (plus 1 recaptured)
American Robin - 2
House Finch - 3
Field Sparrow - 1
Fox Sparrow - 3 (plus 1 released unbanded)
Dark-eyed Junco - 3
White-throated Sparrow - 2 (plus 2 recaptured)
Song Sparrow - 3 (plus 2 recaptured)
Swamp Sparrow - 2
Northern Cardinal - 2

No. of species captured: 17
No. banded: 41
No. recaptured: 10
No. released unbanded: 1
Capture Rate: 52.5 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Wren Haynes, Newt Wheeler, Blanche Wicke, Sue Wright.

Visitors: 4

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Thursday, November 6, 2025

It was another clear sunny day, but this time the cloud cover increased by the time we closed to nearly overcast, which may have helped us catch more birds. There were lots of American Robins flying over, and through, the banding area today, so while the 5 we banded was an increase it was less than it could have been. The one in the photo below is an adult male. In fall their head feathers have pale fringing.

After hatch-year male American Robin
A surprising new species for the season today was two American Goldfinches. This is a common species and last year we caught a dozen of them despite that abbreviated banding season.  

Hatch-year female American Goldfinch

Hatch-year female American Goldfinch
It was apparently warm enough today for a Butler's Garter Snake to be active. It may have been heading toward a pile of rocks to hibernate for the winter. Wren and Alexa managed to get three photos showing distinctive characteristics of this species. The first shows the blunt nose and arrangement of stripes on the sides.

Butler's Garter Snake (Thamnophis butleri)
The second is the black-tipped tongue, although I'm not sure this is diagnostic.

Butler's Garter Snake (Thamnophis butleri)
The third character is the tiny yellow dots on the parietal scales on the top of the head.

Butler's Garter Snake (Thamnophis butleri)
Banding Results for November 6, 2025

5.25 nets open 5:30 - 6:45 (6.56 net hrs) audio luring for owls
16.5 nets open 6:45 - 12:45 (99.0 net hours)
Temperature: 39-51
Cloud Cover: 0-90%
Wind Direction: W
Wind Speed: 1-3-7 mph
Barometer: 30.20-30.20
Precipitation: None
Sunrise: 7:11

Downy Woodpecker - 1
[Black-capped Chickadee - 1 recaptured]
Ruby-crowned Kinglet - 1
Golden-crowned Kinglet - 4 (plus 2 recaptured)
Brown Creeper - 1
Winter Wren - 2
Hermit Thrush - 3 (plus 1 recaptured)
American Robin - 5
American Goldfinch - 2
Field Sparrow - 1
Fox Sparrow - 1
American Tree Sparrow - 3 (plus 1 released unbanded)
Dark-eyed Junco - 2
White-throated Sparrow - 11 (plus 1 released unbanded)
Song Sparrow - 2
Swamp Sparrow - 1

No. of species captured: 16
No. banded: 40
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 46.5 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Wren Haynes, Erika VanKirk, Blanche Wicke.

Visitors: 2

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Saturday, November 8, 2025 

Temperatures started out a bit warmer this morning, but dropped down a bit before rising back to where it started. So fairly typical for early November. The trace of rain before sunrise was not in the forecast, and did not show on the radar. But it was brief and light. Despite the lateness of the season, three new species for the fall were captured today. Audio-luring for owls produced our second owl of the season, this one an Eastern Screech-Owl.

After hatch-year Eastern Screech-Owl

After hatch-year Eastern Screech-Owl
The second new species, a Mourning Dove, is a common species but unexpected because they don't hang out in the habitats where the nets are set up, and they are big enough to get out of nets if they're caught.  

Hatch-year male Mourning Dove
And the third new species for the season was overdue, as we would have expected them earlier in October, this Blue-headed Vireo was rather late. 

After hatch-year Blue-headed Vireo

After hatch-year Blue-headed Vireo
And to close out the season, the completely overcast sky all day turned a bit more interesting in late morning; a fitting way to end an interesting banding season.

 

Banding Results for November 8, 2025

5.25 nets open 5:30 - 6:45 (6.56 net hrs) audio luring for owls
16.5 nets open 6:45 - 12:45 (99.0 net hours)
Temperature: 44-41-43
Cloud Cover: 100%
Wind Direction: N
Wind Speed: 5-7-10 mph
Barometer: 29.80-29.90
Precipitation: Trace rain
Sunrise: 7:14

Mourning Dove - 1
Eastern Screech-Owl - 1
[Downy Woodpecker - 1 recaptured]
Blue-headed Vireo - 1
Winter Wren - 1
Hermit Thrush - 3 (plus 1 recaptured)
American Robin - 2 (plus 2 released unbanded)
American Goldfinch - 2
Fox Sparrow - 1
American Tree Sparrow - 1
Dark-eyed Junco - 2
[White-throated Sparrow - 1 recaptured]
Song Sparrow - 1 (plus 1 recaptured)
Swamp Sparrow - 1
Northern Cardinal - 1

No. of species captured: 15
No. banded: 19
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 24.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Wren Haynes, Marissa Jardine, Guy Lenk, Lily Pagac, Erika VanKirk, Newt Wheeler, Blanche Wicke.

Visitors: 3

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2025 Fall Bird Banding Season Totals

Banding was conducted on a total of 29 days, with nets open for 173.0 hours, plus audio-luring for owls for 19.0 hours. To compare between seasons and between stations, we calculate the number of hours and number of nets open as "net hours". One 12-meter net open for 1 hour equals one net hour. The standard is to calculate the number of individuals banded per 100 net hours. At the beginning of the season, 12 nets were open by later in the fall the number of nets was increased to 16.5. So the season total for net hours was 2258.25, plus 101.25 net hours audio luring for owls.

A total of 77 species and 896 individuals was banded. The totals for all species is shown below, with the number per 100 net hours in parentheses. For Ruby-throated Hummingbirds and the two species of owls, number per 100 net hours is calculated on fewer total net hours because hummingbirds are no longer in the area after late September, and audio-luring for owls was not conducted for the entire fall season.

It was a good season for thrushes and sparrows, but the number of insectivores like warblers and flycatchers was disappointing. The prolonged near-drought conditions this season may have been a factor. 

Mourning Dove - 1 (0.04)
Ruby-throated Hummingbird - 19 (1.58)
American Woodcock - 1 (0.04)
Sharp-shinned Hawk - 1 (0.04)
Cooper's Hawk - 1 (0.04)
Eastern Screech-Owl - 1 (0.99)
Northern Saw-whet Owl - 1 (0.99)
Yellow-bellied Sapsucker - 1 (0.04)
Downy Woodpecker - 14 (0.62)
Northern Flicker - 2 (0.09)
Great Crested Flycatcher - 1 (0.04)
Yellow-bellied Flycatcher - 1 (0.04)
Acadian Flycatcher - 1 (0.04)
Alder Flycatcher - 2 (0.09)
"Traill's" Flycatcher - 4 (0.18)
Least Flycatcher - 1 (0.04)
Eastern Phoebe - 1 (0.04)
White-eyed Vireo - 1 (0.04)
Blue-headed Vireo - 1 (0.04)
Philadelphia Vireo - 6 (0.27)
Red-eyed Vireo - 11 (0.49)
Blue Jay - 5 (0.22)
Black-capped Chickadee - 2 (0.09)
Ruby-crowned Kinglet - 22 (0.97)
Golden-crowned Kinglet - 25 (1.11)
Cedar Waxwing - 2 (0.09)
Red-breasted Nuthatch - 1 (0.04)
White-breasted Nuthatch - 1 (0.04)
Brown Creeper - 4 (0.18)
Northern House Wren - 37 (1.64)
Winter Wren - 27 (1.20)
Gray Catbird - 66 (2.92)
Brown Thrasher - 1 (0.04)
Veery - 2 (0.09)
Gray-cheeked Thrush - 5 (0.22)
Swainson's Thrush - 105 (4.65)
Hermit Thush - 114 (5.05)
Wood Thrush - 2 (0.09)
American Robin - 14 (0.62)
House Finch - 3 (0.13)
Purple Finch - 1 (0.04)
American Goldfinch - 4 (0.18)
Field Sparrow - 3 (0.13)
Fox Sparrow - 7 (0.31)
American Tree Sparrow - 6 (0.27)
Dark-eyed Junco - 14 (0.62)
White-crowned Sparrow - 1 (0.04)
White-throated Sparrow - 118 (5.23)
Song Sparrow - 71 (3.14) 
Lincoln's Sparrow - 6 (0.27)
Swamp Sparrow - 36 (1.59)
Eastern Towhee - 2 (0.09)
Baltimore Oriole - 2 (0.09)
Red-winged Blackbird - 7 (0.31)
Brown-headed Cowbird - 1 (0.04)
Ovenbird - 10 (0.44)
Northern Waterthrush - 2 (0.09)
Black-and-white Warbler - 1 (0.04)
Connecticut Warbler - 4 (0.18)
Mourning Warbler - 3 (0.13)
Tennessee Warbler - 3 (0.13)
Orange-crowned Warbler - 1 (0.04)
Nashville Warbler - 9 (0.40)
Common Yellowthroat - 15 (0.66)
American Redstart - 6 (0.27)
Magnolia Warbler - 4 (0.18)
Bay-breasted Warbler - 10 (0.44)
Blackburnian Warbler - 2 (0.09)
Northern Yellow Warbler - 3 (0.13)
Chestnut-sided Warbler - 1 (0.04)
Blackpoll Warbler - 2 (0.09)
Black-throated Blue Warbler - 2 (0.09)
Yellow-rumped Warbler - 9 (0.40)
Wilson's Warbler - 1 (0.04)
Northern Cardinal - 13 (0.58)
Rose-breasted Grosbeak - 1 (0.04)
Indigo Bunting - 5 (0.22) 

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Fall Bird Banding 2025 - October  

Moderate drought continued across southeastern Michigan well into October, with no rain until the 19th, and only about an inch or so that day. The above-normal temperatures continued into mid-month as well, with temperatures reaching the 70s on the 2nd and 18th, and to the 80s on the 5th. Most of the 9 days of banding this month had very clear skies, making nets more visible than on cloudy days, and wind was a factor on four days. Audio luring for Northern Saw-whet Owls was begun on the 2nd, with three stations set up by 5:30 a.m. and operated for about 2 hours until first light, after which the remaining nets were opened for songbirds for the standard 6 hours. The station was open for one day more than the established protocol of 8 days due to the configuration of the calendar this year. September is warbler month, which was disappointing, while October is sparrow month, which was definitely better. 

Thursday, October 2, 2025

Today's warm temperatures were more like September than October, but a few first arrivals for the season were banded today including Ruby-crowned Kinglet, Brown Creeper, and Dark-eyed (Slate-colored) Junco.

Hatch-year female Ruby-crowned Kinglet

Hatch-year Brown Creeper

Hatch-year female Dark-eyed (Slate-colored) Junco
Swainson's Thrushes migrate into early October, but the 10 banded today was more than expected. Red-winged Blackbirds have been common in the area since early in the season, but catching them is very unpredictable. Today we caught 7 of them, all hatch-year females, in the same net on the same net run.

Hatch-year female Red-winged Blackbird

Hatch-year female Red-winged Blackbird
Perhaps the most unexpected capture today was the "Traill's" Flycatcher. Unfortunately, despite all the measurements taken, it did not key out to Willow or Alder Flycatcher, but either one is extremely rare this late in the fall and is the first of either species that I've banded in October.

Hatch-year "Traill's" Flycatcher
The seasonal transition was exemplified by equal numbers (2 each) of Northern House Wren and Winrer Wren. The only warbler today was a somewhat late Ovenbird.

Banding Results for October 2, 2025

6 nets open 5:30 - 7:00 (9.0 net hrs) audio luring for owls
12 nets open 7:00 - 13:00 (72.0 net hours)
Temperature: 55-72
Cloud Cover: 50-80-50%
Wind Direction: NE-NW
Wind Speed: 1-3-5 mph
Barometer: 30.31-30.29
Precipitation: None
Sunrise: 7:30

Downy Woodpecker - 2 (plus 1 recaptured)
"Traill's" Flycatcher - 1
Red-eyed Vireo - 1
Ruby-crowned Kinglet - 8
Brown Creeper - 2
Northern House Wren - 2
Winter Wren - 2
Gray Catbird - 1 (plus 1 recaptured)
Gray-cheeked Thrush - 1
Swainson's Thrush - 10 (plus 1 recaptured)
Dark-eyed Junco - 1
White-throated Sparrow - 5
Swamp Sparrow - 3
Song Sparrow - 3 (plus 1 released unbanded)
Red-winged Blackbird - 7 (plus 2 released unbanded)
Ovenbird - 1
Northern Cardinal - 1

No. of species captured: 17
No. banded: 51
No. recaptured: 3
No. released unbanded: 3
Capture Rate: 79.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Olive Ballard, Alexa Blankenship, Mike Charlebois, Guadalupe Cummins, Wren Haynes, Dave Lancaster, Erika VanKirk.

Visitors: 4

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Sunday, October 5, 2025

Today's near-record temperatures and southwest winds did not bode well for a big day, and the numbers were lower than we'd hoped. Both Winter and Northern House Wrens were captured again today, providing a good side-by-side comparison at one point for the only photo highlight of the day.

Winter (left) and Northern House Wrens
Two warblers were banded today, a Common Yellowthroat and another somewhat late Ovenbird.

Banding Results for October 5, 2025

6 nets open 5:30 - 7:00 (9.0 net hrs) audio luring for owls
12 nets open 7:00 - 13:00 (72.0 net hours)
Temperature: 66-82
Cloud Cover: 40-0%
Wind Direction: SW
Wind Speed: 1-3-5 mph
Barometer: 30.15-30.16
Precipitation: None
Sunrise: 7:34

Downy Woodpecker - 1
Blue Jay - 1
Ruby-crowned Kinglet - 1
Northern House Wren - 2 (plus 1 recaptured)
Winter Wren - 3 (plus 1 released unbanded)
Gray Catbird - 2
Hermit Thrush - 2
[Gray-cheeked Thrush - 1 recaprtued]
Swainson's Thrush - 2
Swamp Sparrow - 1
Song Sparrow - 1
White-throated Sparrow - 4
Ovenbird - 1
Common Yellowthroat - 1
[Northern Cardinal - 1 recaptured]

No. of species captured: 15
No. banded: 22
No. recaptured: 3
No. released unbanded: 1
Capture Rate: 36.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, Mike Charlebois, Kaina Gonzalez, Danielle Hawkins, Erika VanKirk, Blanche Wicke.

Visitors: 9

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Thursday, October 9, 2025 

More seasonal temperatures and northerly winds overnight brought a good number of migrants into the area. It also brought some cloud cover early, which has been rare enough this season that I had to take photos of the sunrise, for the only photo highlights of the day.

But the clouds didn't last long. It turned out to be the best day of the season so far, although a 100 bird day still eludes us. Most of the captures today were of two species, an expected influx of White-throated Sparrows and Hermit Thrushes. Five Yellow-rumped Warblers were welcome, although their season total remains quite low. A first for the season was a White-crowned Sparrow. 

Banding Results for October 9, 2025

5 nets open 5:30 - 7:00 (7.5 net hrs) audio luring for owls
12 nets open 7:00 - 13:00 (72.0 net hours)
Temperature: 45-56
Cloud Cover: 20-0%
Wind Direction: N-NE
Wind Speed: 1-3-7 mph
Barometer: 30.49-30.51
Precipitation: None
Sunrise: 7:38

Blue Jay - 1
Brown Creeper - 1
Ruby-crowned Kinglet - 3
Winter Wren - 5
Hermit Thrush - 15 (plus 2 recaptured, 1 released unbanded)
Swainson's Thrush - 1
Dark-eyed Junco -  1
Swamp Sparrow - 5
Song Sparrow - 8
White-crowned Sparrow - 1
White-throated Sparrow - 27 (plus 1 released unbanded)
Yellow-rumped Warbler - 5
Northern Cardinal - 2

No. of species captured: 13
No. banded: 75
No. recaptured: 2
No. released unbanded: 2
Capture Rate: 109.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Wren Haynes, Dave Lancaster, Blanche Wicke.

Visitors: 3

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Saturday, October 11, 2025 

It was another busy day, but dominated by three species; Hermit Thrush, Song Sparrow, and White-throated Sparrow. So, no photo highlights today, not even a sunrise with clouds as it was clear and sunny most of the day.  

Banding Results for October 11, 2025

5 nets open 5:30 - 7:00 (7.5 net hrs) audio luring for owls
12 nets open 7:00 - 13:00 (72.0 net hours)
Temperature: 52-62
Cloud Cover: 0-90%
Wind Direction: NW
Wind Speed: 1-3-5 mph
Barometer: 30.08-30.10
Precipitation: None
Sunrise: 7:40

Blue Jay - 1
Ruby-crowned Kinglet - 1
Winter Wren - 1 (plus 1 released unbanded)
Gray Catbird - 1
Hermit Thrush - 20 (plus 6 recaptured)
[Swainson's Thrush - 1 recaptured]
American Robin - 1
White-throated Sparrow - 18
Swamp Sparrow - 6
Song Sparrow - 12
Yellow-rumped Warbler - 2

No. of species captured: 11
No. banded: 63
No. recaptured: 7
No. released unbanded: 1
Capture Rate: 98.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Tori Guido, Wren Haynes, Pierre Hendricks, Guy Lenk, Nolan Lenk.

Visitors: 8

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Friday, October 17, 2025 

Today was another day dominated by Hermit Thrushes and White-throated Sparrows. The cloud cover, and trace of rain at dawn, perhaps kept birds low enough to catch. Golden-crowned Kinglets had not yet arrived, so today's first ones of the season were welcome if not overdue. The Nature Center staff brought a school group over to the banding table to observe the process and learn about our research.

Hatch-year male Golden-crowned Kinglet
Another first for the season, although a generally infrequently captured species, was a Field Sparrow.

Hatch-year Field Sparrow

Hatch-year Field Sparrow
Two more Dark-eyed Juncos today gave the day a wintery flavor despite the warmer than normal temperatures.

Banding Results for October 17, 2025

5.25 nets open 5:30 - 7:15 (9.2 net hrs) audio luring for owls
14.25 nets open 7:15 - 13:15 (72.0 net hours)
Temperature: 44-64
Cloud Cover: 50-90%
Wind Direction: Calm-SSW
Wind Speed: 0-5-7 mph
Barometer: 30.12-30.00
Precipitation: Trace rain
Sunrise: 7:47

[Black-capped Chickadee - 2 recaptured]
Ruby-crowned Kinglet - 1
Golden-crowned Kinglet - 2
Winter Wren - 1
Hermit Thrush - 18 (plus 1 recaptured)
American Robin - 1
Field Sparrow - 1
Dark-eyed Junco - 2
White-throated Sparrow - 17 (plus 1 recaptured)
Song Sparrow - 6
Swamp Sparrow - 5

No. of species captured: 11
No. banded: 54
No. recaptured: 4
No. released unbanded: 0
Capture Rate: 67.8 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Wren Haynes, Pierre Hendricks, Marissa Jardine, Dave Lancaster, Lily Pagac, Blanche Wicke.

Visitors: 26

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Saturday, October 18, 2025

We don't normally band two days in a row, but rain popped up in the forecast for the 19th and my wonderful volunteers switched days on short notice! The Nature Center staff brought a school group over to the banding table to observe the process and learn about our research. I have been looking at a relatively new tool to monitor over night migration, BirdCast. Sometimes there are thousands of birds, rarely a million or more, over Wayne County. But last night's report was, well, very disappointing. 

But we did catch a few birds, including the first hatch-year Black-capped Chickadee of the season. It isn't clear, but suggests that perhaps they didn't have a very good breeding season this summer. 

Hatch-year Black-capped Chickadee
Given the warm conditions today, it wasn't too surprising to see snake, a recently hatched Northern Watersnake.

Northern Watersnake (Nerodia sipedon)

Northern Watersnake (Nerodia sipedon)
Banding Results for October 18, 2025

5.25 nets open 5:30 - 7:15 (9.2 net hrs) audio luring for owls
15.75 nets open 7:15 - 13:15 (94.5 net hours)
Temperature: 61-73
Cloud Cover: 80-40%
Wind Direction: S
Wind Speed: 5-7-12 mph
Barometer: 29.83-29.72
Precipitation: None
Sunrise: 7:48

Black-capped Chickadee - 1
Ruby-crowned Kinglet - 2
Golden-crowned Kinglet - 1
Winter Wren - 2
Hermit Thrush - 4 (plus 3 recaptured)
White-throated Sparrow - 7 (plus 1 recaptured, 1 released unbanded)
Song Sparrow - 3
Swamp Sparrow - 2
[Northern Cardinal - 1 recaptured]

No. of species captured: 9
No. banded: 22
No. recaptured: 5
No. released unbanded: 1
Capture Rate: 29.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Wren Haynes, Marissa Jardine, Lily Pagac, Newt Wheeler, Blanche Wicke.

Visitors: 16

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Thursday, October 23, 2025

Temperatures dropped to more normal levels, and there was a good migration overnight, so we had a decent day today with five new species for the season! Four of these new species were expected, and included our first Eastern Phoebe.

After hatch-year Eastern Phoebe

After hatch-year Eastern Phoebe
Two sparrow species today were expected first arrivals, American Tree Sparrow and Fox Sparrow.

Hatch-year American Tree Sparrow

Hatch-year American Tree Sparrow

Hatch-year Fox Sparrow

Hatch-year Fox Sparrow
The first Eastern Towhee of the season, our biggest sparrow, was a nice adult male with red eyes. We don't catch very many of these, so this was a highlight for the day and the season.

After hatch-year male Eastern Towhee

After hatch-year male Eastern Towhee
A Northern House Wren was perhaps the last of the season, and rather late for the species in southeastern Michigan.

Hatch-year Northern House Wren
A big surprise today, and a definite highlight of the season, was a White-eyed Vireo. The eyes of hatch-years are pearly-gray.

Hatch-year White-eyed Vireo

Hatch-year White-eyed Vireo
Banding Results for October 23, 2025

5.25 nets open 5:30 - 7:30 (10.5 net hrs) audio luring for owls
15.75 nets open 7:30 - 13:30 (94.5 net hours)
Temperature: 46-52
Cloud Cover: 100-70%
Wind Direction: W
Wind Speed: 5-7-12 mph
Barometer: 29.85-29.98
Precipitation: None
Sunrise: 7:54

Downy Woodpecker - 1
Eastern Phoebe - 1
White-eyed Vireo - 1
Ruby-crowned Kinglet - 4
Golden-crowned Kinglet - 3
Winter Wren - 3
Northern House Wren - 1
Hermit Thrush - 18 (plus 1 recaptured)
American Tree Sparrow - 1
Fox Sparrow - 1
Dark-eyed Junco - 1
White-throated Sparrow - 14 (plus 1 recaptured)
Swamp Sparrow - 3 (plus 1 recaptured)
Song Sparrow - 10 (plus 1 recaptured)
Eastern Towhee - 1
Yellow-rumped Warbler - 1

No. of species captured: 15
No. banded: 64
No. recaptured: 4
No. released unbanded: 0
Capture Rate: 72.0 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Guadalupe Cummins, Wren Haynes, Marissa Jardine, Dave Lancaster, Averi Lohman, Blanche Wicke.

Visitors: 2

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Sunday, October 26, 2025

The early morning hours of setting up a few nets with audio lures for Northern Saw-whet Owls paid off this morning, with a second-year female captured on the 6:30 a.m. net run. The crisp temperatures, and lack of wind, were perfect conditions for catching owls.

Second-year female Northern Saw-whet Owl
A block of recently grown inner primaries and outer secondaries contrasting with older ones allowed this owl to be aged as second-year. The long wing measurement and weight indicated it was a large female.

Second-year female Northern Saw-whet Owl
It was also a good day for Hermit Thrushes and Winter Wrens, and a second Eastern Towhee (this one a female) was banded today. The White-eyed Vireo from last week was recaptured today as well.

Sometimes birds with minor deformities are captured. Today we had a Hermit Thrush with a slightly overgrown and curved upper mandible. It has survived so far, so it will probably be fine.

Hatch-year Hermit Thrush
Banding Results for October 26, 2025

5.25 nets open 5:30 - 7:30 (10.5 net hrs) audio luring for owls
15.75+ nets open 7:30 - 13:30 (96.0 net hours)
Temperature: 39-52
Cloud Cover: 10-0%
Wind Direction: N-NE
Wind Speed: 1-3-10 mph
Barometer: 30.50-30.40
Precipitation: None
Sunrise: 7:58

Northern Saw-whet Owl - 1
Downy Woodpecker - 1
[White-eyed Vireo - 1 recaptured]
Blue Jay - 2
Golden-crowned Kinglet - 5
Winter Wren - 3
Hermit Thrush - 20 (plus 2 recaptured, 1 released unbanded)
Fox Sparrow - 1
[Dark-eyed Junco - 1 recaptured]
White-throated Sparrow - 3 (plus 1 recaptured, 1 released unbanded)
Swamp Sparrow - 3
Song Sparrow - 4
Eastern Towhee - 1

No. of species captured: 13
No. banded: 44
No. recaptured: 5
No. released unbanded: 2
Capture Rate: 53.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Tori Guido, Wren Haynes, Guy Lenk, Nolan Lenk, Blanche Wicke.

Visitors: 8

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Friday, October 31, 2025

Numbers were back down again today, perhaps mostly due to the windy conditions exposing the nets to view. The only highlight today was a rather late (but not record late) Blackpoll Warbler. It was only the second one of the season. Normally about 10 times as many would be expected.

Hatch-year Blackpoll Warbler
This honeybee perched on one of the nets was a sign of the warmth of the day. 

Western Honeybee (Apis mellifera)
The Nature Center staff brought a school group over to the banding table to observe the process and learn about our research.  

Banding Results for October 31, 2025

5.25 nets open 5:30 - 7:30 (10.5 net hrs) audio luring for owls
16.5 nets open 7:30 - 13:30 (99.0 net hours)
Temperature: 41-54
Cloud Cover: 70-90%
Wind Direction: W-WNW
Wind Speed: 5-7-15 mph
Barometer: 29.70-29.70
Precipitation: None
Sunrise: 8:04

Downy Woodpecker - 1 (plus 2 recaptured)
[Black-capped Chickadee - 1 recaptured]
Golden-crowned Kinglet - 2
Winter Wren - 1 (plus 1 recaptured)
Hermit Thrush - 4 (plus 1 recaptured)
American Tree Sparrow - 1
Dark-eyed Junco - 2
White-throated Sparrow - 6
Swamp Sparrow - 2
Song Sparrow - 2
Blackpoll Warbler - 1
[Northern Cardinal - 1 recaptured]

No. of species captured: 12
No. banded: 22
No. recaptured: 6
No. released unbanded: 0
Capture Rate: 28.3 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Guadalupe Cummins, Wren Haynes, Dave Lancaster, Averi Lohman, Erika VanKirk, Newt Wheeler, Blanche Wicke.

Visitors: 31

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Fall Bird Banding 2025 - September 

The dry conditions from August continued through September. The nearly 1 inch of rain on September 24th was almost the entire rainfall for the entire month. Insects (except for grasshoppers) and fruit were in short supply in the banding area. Along with these dry days, temperatures were 10-15 degrees above average, with most banding days also having no cloud cover, so our nets were more visible to the birds. The number and diversity of warblers this month was lower than expected, possibly due to the heat and drought. But the number of interesting species captures somewhat offset the low numbers. We did band two days each week, for a total of 8 days, meeting the established protocol. One day was rescheduled due to rain in the forecast, but the rain did not materialize that day. 

Just to continue from late August's insect identifications, here are a few more from the last week of August before we get into the bird banding results below.

Monarch Butterfly (Danaus plexippus) chrysalis

Virginia Creeper Sphinx (Darapsa myron) caterpillar

Red-legged Grasshopper (Melanoplus femurrubrum)
on the banding table...they're everywhere!
 
Friday, September 5, 2025 

It eventually got too windy today to band, but not before our normal closing time. But a White-tailed Deer running through (and destroying) a net at 7:30 reduced the number of nets used for the rest of the day. I don't put another net up the same day at a site that had a deer near it. Only 11 warblers of 9 species were banded today, but included some firsts for the season like this Black-and-white Warbler.

Hatch-year female Black-and-white Warbler
The Blackburnian Warbler is an early migrant, but tends to forage high in the trees, so is not often captured at banding stations. So we were happy to catch this hatch-year male.

Hatch-year male Blackburnian Warbler
Always a hightlight, today's Connecticut Warbler was the 2nd of the season.

Hatch-year female Connecticut Warbler
Other interesting captures today included 2 Ruby-throated Hummingbirds, a Mourning Warbler, and an Indigo Bunting.

Banding Results for September 5, 2025

12 nets open 6:45 - 12:45 (66.75 net hours)
Temperature: 56-72
Cloud Cover:10-100-50%
Wind Direction: S-SW
Wind Speed: 5-7-15 mph
Barometer: 29.73-29.70
Precipitation: None
Sunrise: 7:01

Ruby-throated Hummingbird - 2
Downy Woodpecker - 1
Northern Flicker - 1
Red-eyed Vireo - 1
Northern House Wren - 2
Gray Catbird - 6
Swainson's Thrush - 2 (plus 1 released unbanded)
Ovenbird - 1
Black-and-white Warbler - 1 (plus 1 released unbanded)
Tennessee Warbler - 1
Connecticut Warbler - 1
Mourning Warbler - 1
American Redstart - 2
Magnolia Warbler - 2
Blackburnian Warbler - 1
Bay-breasted Warbler - 1
Indigo Bunting - 1 (plus 1 recaptured)

No. of species captured: 17
No. banded: 27
No. recaptured: 1
No. released unbanded: 2
Capture Rate: 44.9 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, Luke Grange, Kathy McDonald, Jacob Pitcher, Nate Spala, Erika VanKirk, Blanche Wicke.

Visitors: 0

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Sunday, September 7, 2025

Another fairly slow day, but with highlights including the first Philadelphia Vireo of the season.

Hatch-year Philadelphia Vireo

Hatch-year Philadelphia Vireo
It seemed like a re-run of Friday, with another Blackburnian Warbler.

Hatch-year male Blackburnian Warbler

Hatch-year male Blackburnian Warbler
And another Connecticut Warbler, the third of the season! This one was an adult female.

After hatch-year female Connecticut Warbler

After hatch-year female Connecticut Warbler
Perhaps even more unexpected was the juvenile Purple Finch, which was rather early for this species in southern Michigan. They cannot be sexed this early in the season.

Hatch-year Purple Finch

Hatch-year Purple Finch
The first influx of Swainson's Thrushes came through today, with 9 banded.

Banding Results for September 7, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 49-66
Cloud Cover:10-50%
Wind Direction: Calm-WNW
Wind Speed: 0-3-5 mph
Barometer: 30.10-30.14
Precipitation: None
Sunrise: 7:04

Alder Flycatcher - 1
Philadelphia Vireo - 1
Gray Catbird - 3 (plus 2 recaptured)
Veery - 1
Swainson's Thrush - 9
Purple Finch - 1
Ovenbird - 2
Nashville Warbler - 1
Common Yellowthroat - 1
Connecticut Warbler - 1
[American Redstart - 1 released unbanded]
Blackburnian Warbler - 1
Bay-breasted Warbler - 1

No. of species captured: 13
No. banded: 23
No. recaptured: 2
No. released unbanded: 1
Capture Rate: 36.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Newt Wheeler, Blanche Wicke, Sue Wright.

Visitors: 10

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Friday, September 12, 2025

An increase in numbers captured today may have been partly caused by the fog that was present for the first couple hours that the nets were open. But the fog burned off quickly and it became sunny and hot for the remainder of the day. Among the many Swainson's Thrushes today was the first Gray-cheeked Thrush of the season.

Hatch-year Gray-cheeked Thrush
Another first of the season was Lincoln's Sparrow, with two banded today.

Hatch-year Lincoln's Sparrow
Three Philadelphia Vireos were banded today, which is a very good single-day number. And a total of 15 warblers of 7 species was banded today.

Banding Results for September 12, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 57-75
Cloud Cover:0-10%
Wind Direction: Calm-E
Wind Speed: 0-3-5 mph
Barometer: 30.24-30.21
Precipitation: Fog
Sunrise: 7:09

Philadelphia Vireo - 3
Northern House Wren - 2
Gray Catbird - 2
Veery - 1
Gray-cheeked Thrush - 1
Swainson's Thrush - 14
[American Robin - 1 released unbanded]
Lincoln's Sparrow - 2
Song Sparrow - 5
Ovenbird - 2
Nashville Warbler - 4
Common Yellowthroat - 1
Mourning Warbler - 1
American Redstart - 1
Bay-breasted Warbler - 5
Blackpoll Warbler - 1

No. of species captured: 15
No. banded: 45
No. recaptured: 0
No. released unbanded: 1
Capture Rate: 63.9 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Pierre Hendricks, Lily8 Rhiannon-Pagac, Erika VanKirk, Blanche Wicke.

Visitors: 2

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Sunday, September 14, 2025

It was another hot and sunny day, with fog in the early morning. More than half the birds captured today were Swainson's Thrushes. Only 5 warblers of 5 species were captured today, but included the season's first Yellow-rumped Warbler, a molting adult female.

After hatch-year female Yellow-rumped Warbler
The first Red-eyed Vireo and Tennessee Warbler were banded today.

Banding Results for September 14, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 56-75
Cloud Cover:0%
Wind Direction: Calm-NE
Wind Speed: 0-5-7 mph
Barometer: 30.07-30.09
Precipitation: Fog
Sunrise: 7:11

"Traill's" Flycatcher - 1
[Philadelphia Vireo - 1 recaptured]
Red-eyed Vireo - 1
Gray Catbird - 9 (plus 1 recaptured)
Gray-cheeked Thrush - 1
Swainson's Thrush - 23 (plus 2 released unbanded)
American Robin - 2
[Song Sparrow - 1 recaptured]
Ovenbird - 1 (plus 1 recaptured)
Nashville Warbler - 1
Common Yellowthroat - 1
Yellow-rumped Warbler - 1

No. of species captured: 13
No. banded: 42
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 66.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Cass Arsenault, Shelly Andrews, Mike Charlebois, Hank Haynes, Wren Haynes, Mary Jo McLellan, Jacob Pitcher, Newt Wheeler, Blanche Wicke.

Visitors: 5

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Thursday, September 18, 2025 

A third day of fog, but slightly reduced numbers of birds, and eventually also a clear blue sky along with the highest temperature so far this month. There were several highlights today, including the first Brown Thrasher of the season. The best way of ageing them is by eye color; dull yellow in hatch-year and bright yellow in after hatch-year. This one seems to have dull yellow eyes.

Hatch-year Brown Thrasher

Hatch-year Brown Thrasher
The first Northern Waterthrush of the season was banded today, which was at least a couple weeks later than the expected arrival date. The pale tips on the tertials make this one easily aged as hatch-year.

Hatch-year Northern Waterthrush
As I said before, Connecticut Warbler is always a highlight, and this one today was the fourth of the season, which ties the best season I ever had at my previous banding site. 

Hatch-year female Connecticut Warbler
Red-breasted Nuthatches were being noted a lot of places in August, which is an annual post-breeding movement into southeastern Michigan. But continuing reports suggest that more will continue and overwinter this year. So it was nice to catch one today.

Hatch-year male Red-breasted Nuthatch

Hatch-year male Red-breasted Nuthatch
We had been hearing Rose-breasted Grosbeaks in the banding area for a few days, and today we caught one, a hatch-year male. The pink wing lining indicates that it is a male.

Hatch-year male Rose-breasted Grosbeak
In general, hatch-year Rose-breasted Grosbeaks have all-brown flight feathers, unlike the black feathers of adults. In spring, these young will molt about half of their flight feathers, showing a clear contrast. But this male had a couple of black feathers. I believe just molted these feathers earlier than normal. Unless anyone can suggest a different explanation...

Hatch-year male Rose-breasted Grosbeak
Other interesting birds banded today included 2 more Philadelphia Vireos, 4 more Red-eyed Vireos, a Lincoln's Sparrow, and 13 Swainson's Thrushes.

Banding Results for September 18, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 62-83
Cloud Cover: 90-20%
Wind Direction: Calm-W
Wind Speed: 0-1-3 mph
Barometer: 30.03-30.04
Precipitation: Fog
Sunrise: 7:15

Philadelphia Vireo - 2
Red-eyed Vireo - 4
Red-breasted Nuthatch - 1
Northern House Wren - 4
Brown Thrasher - 1
Gray Catbird - 5 (plus 1 recaptured)
Swainson's Thrush - 13
American Robin - 1
Lincoln's Sparrow - 1
Northern Waterthrush - 2
Connecticut Warbler - 1
Bay-breasted Warbler - 1
Rose-breasted Grosbeak - 1
[Northern Cardinal - 1 recaptured]

No. of species captured: 14
No. banded: 37
No. recaptured: 2
No. released unbanded: 0
Capture Rate: 54.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Guadalupe Cummins, Dave Lancaster, Blanche Wicke

Visitors: 12

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Saturday, September 20, 2025 

I had to include a sunrise photo from the banding area, if nothing more than to prove that once in a while there is a cloud in the sky! Venus is near the top, and a very slender crescent moon is near the bottom.

There were several firsts for the season today. The Ruby-throated Hummingbird was the first one since September 5th. The nectar sources, including Wild Bergamot, did not bloom as long as they typically do likely becuase of the drought conditions since early August. The two Wood Thrushes were likely migrants, and the first of the fall.

Hatch-year Wood Thrush
Only 5 warblers of 4 species was captured today, but the Wilson's Warbler was a first of the fall.

Hatch-year male Wilson's Warbler
Three White-throated Sparrows banded today were expected firsts.

Hatch-year White-throated Sparrow
An unexpected first was a hatch-year Sharp-shinned Hawk. Last October we caught one too, but that one had been banded previously at Hawk Cliff, Ontario. Today's was not banded. The brown upperparts and streaked underparts indicate the age as hatch-year, while the size (wing length) indicate the sex as male.

Hatch-year male Sharp-shinned Hawk

Hatch-year male Sharp-shinned Hawk
It was another good day for Red-eyed Vireos (4) and Swainson's Thrushes (15). 

Banding Results for September 20, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 61-73
Cloud Cover: 50-80%
Wind Direction: ENE
Wind Speed: 1-3-10 mph
Barometer: 30.14-30.15
Precipitation: None
Sunrise: 7:17

Ruby-throated Hummingbird - 1
Sharp-shinned Hawk - 1
[Northern Flicker - 1 recaptured]
Red-eyed Vireo - 4
Northern House Wren - 2 (plus 1 recaptured)
Gray Catbird - 3
Gray-cheeked Thrush - 1
Swainson's Thrush - 15
Wood Thrush - 2
Lincoln's Sparrow - 1
White-throated Sparrow - 3
[Northern Waterthrush - 1 recaptured]
American Redstart - 2
Magnolia Warbler - 1
Black-throated Blue Warbler - 1
Wilson's Warbler - 1
[Indigo Bunting - 1 released unbanded]

No. of species captured: 17
No. banded: 38
No. recaptured: 3
No. released unbanded: 1
Capture Rate: 56.9 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Wren Haynes, Pierre Hendricks, Leah Stafford, Blanche Wicke.

Visitors: 8

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Friday, September 26, 2025

It was yet another warm and sunny day. Thrush numbers were down, but included the first Hermit Thrush of the season, signaling a turn in the season from earlier long-distance migrants to shorter-distance migrants.

Hatch-year Hermit Thrush

Hatch-year Hermit Thrush
A few sparrows were banded today, which included the first two Swamp Sparrows of the fall. There are patches of marsh on Belle Isle, and within the 10-acre banding site, so there is a possibility that there could be breeding here. But with the dry conditions, there were no juveniles around in August, so breeding probably did not occur in the banding area this year.

Hatch-year Swamp Sparrow

Hatch-year Swamp Sparrow
It was a good day for Common Yellowthroats (4), and single Lincoln's Sparrows and Gray-cheeked Thrushes were highlights too. And, Gray Catbirds had another good day. In case you haven't noticed, numbers of catbirds banded have been good all season.

Banding Results for September 26, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 60-76
Cloud Cover: 0-10%
Wind Direction: Calm-WSW
Wind Speed: 0-1-3 mph
Barometer: 29.86-29.89
Precipitation: None
Sunrise: 7:24

Northern House Wren - 3
Gray Catbird - 7 (plus 1 recaptured)
Hermit Thrush - 1
Gray-cheeked Thrush - 1
Swainson's Thrush - 6 (plus 2 recaptured)
Lincoln's Sparrow - 1
Swamp Sparrow - 2
White-throated Sparrow - 1
[Nashville Warbler - 1 released unbanded]
Common Yellowthroat - 4

No. of species captured: 10
No. banded: 26
No. recaptured: 3
No. released unbanded: 1
Capture Rate: 41.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Dave Lancaster, Joshua Samuels, Erika VanKirk, Newt Wheeler, Blanche Wicke.

Visitors: 7

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Sunday, September 28, 2025 

Finally, a cloudy start to the morning that became completely overcast soon after sunrise. But eventually, the sky became the clear, cloudless blue we've come to expect. Season firsts continue to roll in, like this Winter Wren.

Hatch-year Winter Wren

Hatch-year Winter Wren
Another expected, but uncommon species, is Orange-crowned Warbler. With the abundant goldenrod in the banding area, hopefully we'll catch a few more of them in the next couple of weeks.

Hatch-year male Orange-crowned Warbler
The biggest surprise today, literally and figuratively, was a hatch-year female Cooper's Hawk. They are big enough that they often get out of the songbird nets, and can even damage the nets. 

Hatch-year female Cooper's Hawk
It has been helpful to catch both Cooper's and Sharp-shinned so close together. The two photos below are a useful comparison of head shape, bill size, eye shape and position, brow ridge, etc.

Hatch-year female Cooper's Hawk

Hatch-year male Sharp-shinned Hawk
The top three species captured today were Common Yellowthroat (5), Swainson's Thrush (7), and Gray Catbird (6). The Philadelphia Vireo recaptured today was banded on September 5th, so it has been in the banding area for 23 days. It is hoped that migrants have enough resources to fatten up to continue their migration, but it seems that the drought has reduced insects and fruit this fall. The Ovenbird recaptured today has also been on site for a long time (since August 24th), but has gained 10%, so maybe there will be mixed results this fall.

Banding Results for September 28, 2025

12 nets open 6:45 - 12:45 (72.0 net hours)
Temperature: 64-74
Cloud Cover: 50-100-0%
Wind Direction: W-NE
Wind Speed: 1-3-5 mph
Barometer: 30.02-30.14
Precipitation: None
Sunrise: 7:26

Cooper's Hawk - 1
[Philadelphia Vireo - 1 recaptured]
Winter Wren - 1
Northern House Wren - 3
Gray Catbird - 6 (plus 1 recaptured)
Hermit Thrush - 1
Swainson's Thrush - 7
Lincoln's Sparrow - 1
Ovenbird - 1 (plus 1 recaptured)
Orange-crowned Warbler - 1
Common Yellowthroat - 5

No. of species captured: 11
No. banded: 27
No. recaptured: 3
No. released unbanded: 0
Capture Rate: 41.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Nolan Lenk, Rebecca Lenk, Newt Wheeler, Blanche Wicke.

Visitors: 28

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Fall Bird Banding 2025 - August

The month of August was drier than normal with little rain, after above average precipitation during June and July. The vernal pond between nets 7 and 8 was dried up, and there wasn't even any mud in the area. Three visits were done, one in late June and two in July, to keep the net lanes clear of the fast-growing vegetation. Banding began on August 3rd, with the goal of continuing to document the breeding success of local species. In addition, the first migrants can be expected early in the month. Banding was conducted on 9 days this month, with nets closed early on one day due to the heat. One day was covered with 11 nets instead of 12 after a White-tailed Deer ran through and destroyed net #8 about an hour after the station was open. The first two days of banding were fairly good, with mainly locally breeding species captured and a couple of migrants. The rest of the month was slow, due to the low number of migrants captured. But despite this, each day was interesting. Efforts continued to document the vegetation within the 10-acre circle surrounding the 12 nets, and interesting insects were documented also, possibly because the slow capture rate gave us time to pursue these interests.

Sunday, August 3, 2025

It was a nice surprise today to band the first Ruby-throated Hummingbird of the fall season, which was a hatch-year female that likely was hatched on the island. Another surprise was catching what appeared to be a mated pair of Indigo Buntings, which appeared to be feeding fledglings hiding somewhere between nets 6 and 7. 

After hatch-year male Indigo Bunting

After hatch-year male Indigo Bunting

After hatch-year female Indigo Bunting

After hatch-year female Indigo Bunting
None of the juvenile buntings found their way into the nets, but juvenile Downy Woodpeckers did. They can be a bit challenging to determine the sex, as both juvenile males and females have red on the top of their crowns, unlike adults. The extent of this red is less in females. One of them was easier than most to figure out as a female as it had less red than even most juvenile females.

Hatch-year female Downy Woodpecker
It may come as a surprise to some that the photo below is a male Brown-headed Cowbird.

Hatch-year male Brown-headed Cowbird
Juveniles of both sexes are identical, except for size. Fortunately, male blackbirds of most species are larger than females, at least one they're fully grown. This one had to be weighed and measured before being banded, as males and females take different band sizes. In late summer these juveniles molt into a more adult-like plumage.

The only migrant today was an adult female Tennessee Warbler. 

 

After hatch-year female Tennessee Warbler
After breeding, adults are known to undertake a "molt migration" where they move south a short distance to complete molting before continuing on to their wintering areas.  The molt on this one was obvious. 

After hatch-year female Tennessee Warbler
There were several Eastern Tiger Swallowtails in the area today to distract us.

Eastern Tiger Swallowtail (Papilio glaucus)
Banding Results for August 3, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 57-76
Cloud Cover: 0% (smoke from Canadian wildfires)
Wind Direction: Calm-E
Wind Speed: 0-3-5 mph
Barometer: 30.21-30.19
Precipitation: None
Sunrise: 6:26

Ruby-throated Hummingbird - 1
Downy Woodpecker - 3
Northern Flicker - 1
Northern House Wren - 1
Gray Catbird - 5
Song Sparrow - 2 (plus 1 recaptured)
Brown-headed Cowbird - 1
Tennessee Warbler - 1
[Yellow Warbler - 1 recaptured]
Northern Cardinal - 1 (plus 1 recaptured)
Indigo Bunting - 2

No. of species captured: 11
No. banded: 22
No. recaptured: 3
No. released unbanded: 0
Capture Rate: 34.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Kal Al-Rajhi, Shelly Andrews, Alexa Blankenship, Mike Charlebois, Casey Fazio, Wren Haynes, Blanche Wicke.

Visitors: 1

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Thursday, August 7, 2025

With five banded on the first day, and three banded today, it was quickly becoming clear that Gray Catbirds had a good breeding season on Belle Isle. The young are easily recognized by their heavy molt.

Hatch-year Gray Catbird
The three hatch-year Yellow Warblers captured today could have fledged locally, but they are one of the earliest migrants with the peak in late July, so could have been migrants too.

Hatch-year Yellow Warbler
The only definite migrant today was an Acadian Flycatcher. This southern species breeds in larger woodlands north to mid-Michigan, but the habitat on Belle Isle is not appropriate for them, so this was clearly a migrant. Unlike the other 4 species in the genus Empidonax that also breed in Michigan, I have banded very few Acadian Flycatchers. This was only the 6th one I've banded since 2004, and a first banded on Belle Isle. Even in-hand, this was not an easy identification. It was not compact and big-headed like a Least or Yellow-bellied, but had a more prominent eye ring and more olive upperparts than Willow or Alder. Bill measurements and wing formula helped confirm the species.

Hatch-year Acadian Flycatcher

Hatch-year Acadian Flycatcher
Banding Results for August 7, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 71-81
Cloud Cover: 20-50%
Wind Direction: SE
Wind Speed: 1-3-5 mph
Barometer: 30.21-30.19
Precipitation: None
Sunrise: 6:31

Ruby-throated Hummingbird - 1
Downy Woodpecker - 1
[Northern Flicker - 1 released unbanded]
Acadian Flycatcher - 1
"Traill's" Flycatcher - 1
Black-capped Chickadee - 1
Northern House Wren - 4 (plus 1 recaptured)
Gray Catbird - 3
Song Sparrow - 2
Yellow Warbler - 3
Northern Cardinal - 1 (plus 1 recaptured)
Indigo Bunting - 1 (plus 1 recaptured)

No. of species captured: 12
No. banded: 19
No. recaptured: 3
No. released unbanded: 1
Capture Rate: 31.9 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Pierre Hendricks, Nate Spala, Blanche Wicke.

Visitors: 1

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Saturday, August 9, 2025

No migrants today, and a significant drop in numbers captured. The heat and humidity forced us to close an hour early today. A heavily molting Great Crested Flycatcher was determined to be a female by the presence of a brood patch, confirming nesting on the island. 

After hatch-year female Great Crested Flycatcher

Their impressive bill is surely very effective at catching larger insect prey.

After hatch-year female Great Crested Flycatcher
Two Cedar Waxwings in juvenile plumage also provided confirmation of breeding on the island, as this species typically migrates later in September and October.

Hatch-year male Cedar Waxwing
Banding Results for August 9, 2025

12 nets open 6:15 - 11:15 (60.0 net hours)
Temperature: 74-83
Cloud Cover: 10-30-0%
Wind Direction: S
Wind Speed: 1-3-7 mph
Barometer: 30.09-30.11
Precipitation: None
Sunrise: 6:33

Great Crested Flycatcher - 1
Northern House Wren - 1
Cedar Waxwing - 2
Gray Catbird - 1
Song Sparrow - 1 (plus 1 recaptured)

No. of species captured: 5
No. banded: 6
No. recaptured: 1
No. released unbanded: 0
Capture Rate: 11.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, Mike Charlebois, Wren Haynes, Pierre Hendricks, Erika VanKirk, Newt Wheeler, Blanche Wicke.

Visitors: 4

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Friday, August 15, 2025 

It was another slow, hot, and humid day, but we lasted our standard 6 hours, but short one net as a White-tailed Deer ran through and destroyed net 8 at 9:15. The adult male Ruby-throated Hummingbird banded today could have been a local breeder or a migrant, as adult males migrate earlier than females and young. It was heavily molting its body feathers, as most adults do during August (and perhaps continuing to molt through their southward migration.

After hatch-year male Ruby-throated Hummingbird
A migrant today was a male (note the small chestnut patch on flanks) Bay-breasted Warbler that was retaining some throat and breast spotting typical of juveniles before they migrate. This one was either still migrating, or was not going to finish molting until it reached its wintering area.

Hatch-year male Bay-breasted Warbler

Hatch-year male Bay-breasted Warbler
Banding Results for August 15, 2025

12 nets open 6:15 - 12:15 (69.0 net hours) (1 net destroyed by deer @ 9:15)
Temperature: 69-83
Cloud Cover: 20-60%
Wind Direction: Calm-SE
Wind Speed: 0-3-5 mph
Barometer: 30.10-30.12
Precipitation: None
Sunrise: 6:39

Ruby-throated Hummingbird - 1
Gray Catbird - 1
Song Sparrow - 1
Baltimore Oriole - 1
Bay-breasted Warbler - 1
Northern Cardinal - 1 (plus 1 recaptured)

No. of species captured: 6
No. banded: 6
No. recaptured: 1
No. released unbanded: 0
Capture Rate: 10.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Guadalupe Cummins, Wren Haynes, Pierre Hendricks, Erika VanKirk, Blanche Wicke.

Visitors: 0

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Sunday, August 17, 2025

It was another warm and humid day, with only a few birds and no migrants. A Baltimore Oriole, the second of the fall season, was a hatch-year which likely confirms breeding of this species in the banding area. The only photo highlight from today is this sunrise, taken while we were opening nets.

Banding Results for August 17, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 75-81
Cloud Cover: 100-60%
Wind Direction: NW
Wind Speed: 3-5-10 mph
Barometer: 29.94-30.00
Precipitation: None
Sunrise: 6:41

Ruby-throated Hummingbird - 1
Northern House Wren - 1
Gray Catbird - 2
Song Sparrow - 1
Baltimore Oriole - 1
Northern Cardinal - 2

No. of species captured: 6
No. banded: 8
No. recaptured: 0
No. released unbanded: 0
Capture Rate: 11.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Cass Arsenault, Olive Ballard, Alexa Blankenship, Mike Charlebois, Wren Haynes.

Visitors: 3

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Thursday, August 21, 2025

We got some relief from the heat today, but numbers captured was still quite low. It was the best day so far for Ruby-throated Hummingbirds, and included 3 hatch-year males and 1 hatch-year female, all of which could have been fledged on the island. Note the single red throat feather on the hatch-year male below.

Hatch-year male Ruby-throated Hummingbird
A big surprise today was this American Woodcock that flew into net #8 just after sunrise. Molt indicated that it was an adult, and measurements of the bill and outer primaries indicated that it was a male. Woodcock breed on the island.

After hatch-year male American Woodcock
Banding Results for August 21, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 67-70
Cloud Cover: 100-50%
Wind Direction: NE
Wind Speed: 5-7-12 mph
Barometer: 30.04-30.05
Precipitation: None
Sunrise: 6:45

Ruby-throated Hummingbird - 4
American Woodcock - 1
Northern Cardinal - 1

No. of species captured: 3
No. banded: 6
No. recaptured: 0
No. released unbanded: 0
Capture Rate: 8.3 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Mike Charlebois, Katy Mendez, Hayley Penn, Newt Wheeler, Blanche Wicke.

Visitors: 6

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 Sunday, August 24, 2025

Another day with reasonable temperatures saw an uptick in numbers banded, including four migrants. The Alder Flycatcher was keyed out after I got home and was not photographed. The other three migrants were warblers; American Redstart, Ovenbird, and Mourning Warbler. The redstart was a hatch-year male, showing orangeish breast patches.

Hatch-year male American Redstart
The wet mesic flatwoods on Belle Isle is not typical breeding habitat  for Ovenbirds, so surely this one was a migrant.

Hatch-year Ovenbird
Mourning Warblers definitely don't nest anywhere in Wayne County, and are early migrants. In fall they have a broken white eye ring which could lead to confusion with Connecticut Warbler, which has an unbroken eye ring. 

 

Hatch-year female Mourning Warbler
Mourning Warblers also have whiter throats, and their undertail coverts come well short of the tip of the tail.

Hatch-year female Mourning Warbler
Banding Results for August 24, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 61-74
Cloud Cover: 20-60%
Wind Direction: W
Wind Speed: 3-5-10 mph
Barometer: 29.88-29.85
Precipitation: None
Sunrise: 6:48

Ruby-throated Hummingbird - 4 (plus 1 recaptured)
Alder Flycatcher - 1
Northern House Wren - 2
Gray Catbird - 2 (plus 1 released unbanded)
Ovenbird - 1
Mourning Warbler - 1
American Redstart - 1

No. of species captured: 7
No. banded: 12
No. recaptured: 1
No. released unbanded: 1
Capture Rate: 19.4 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Casey Fazio, Kaina Gonzalez, Audrey Haynes, Wren Haynes, Blanche Wicke, Nick Yerkes.

Visitors: 6

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 Friday, August 29, 2025

 The weather this morning was unseasonably chilly, which may have brought the first significant (but small) influx of migrants along with the northwest winds. The first Yellow-bellied Flycatcher of the season was captured today.

Hatch-year Yellow-bellied Flycatcher
Other flycatchers today included a "Traill's", and a Least. The first Swainson's Thrush of the fall was banded today. Warblers included Ovenbird (recaptured), Magnolia, Chestnut-sided, Bay-breasted, and most surprising, a Connecticut Warbler.  

Hatch-year female Connecticut Warbler
The larger bill and complete white eye ring are quite evident.

Hatch-year female Connecticut Warbler

Hatch-year female Connecticut Warbler

Banding Results for August 29, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 53-66
Cloud Cover: 20-60%
Wind Direction: NW
Wind Speed: 1-3-5 mph
Barometer: 30.12-30.10
Precipitation: None
Sunrise: 6:54

Ruby-throated Hummingbird - 2
"Traill's" Flycatcher - 1
Least Flycatcher - 1
Yellow-bellied Flycatcher - 1
Northern House Wren - 1 (plus 2 recaptured)
Gray Catbird - 3
Swainson's Thrush - 1
Song Sparrow - 3
[Ovenbird - 1 recaptured]
Connecticut Warbler - 1
Magnolia Warbler - 1
Chestnut-sided Warbler - 1
Bay-breasted Warbler - 1
[Northern Cardinal - 1 recaptured]

No. of species captured: 14
No. banded: 17
No. recaptured: 4
No. released unbanded: 0
Capture Rate: 29.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, Mike Charlebois, Dave Lancaster, Mitch Nickert, Erika VanKirk, Blanche Wicke, Sue Wright.

Visitors: 3

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Sunday, August 31, 2025

It was another chilly start, but the temperature got quite comfortable fairly soon. Modest numbers were again captured today. All three warblers species captured were new for the season, and included likely breeding Common Yellowthroats, and migrant Nashville and Black-throated Blue Warblers. The latter was a hatch-year female.

Hatch-year female Black-throated Blue Warbler
The adult Indigo Bunting captured today had a brood patch and so represents a second breeding pair in the banding area.

Banding Results for August 31, 2025

12 nets open 6:15 - 12:15 (72.0 net hours)
Temperature: 54-70
Cloud Cover: 0-10%
Wind Direction: Calm-NE
Wind Speed: 0-3-5 mph
Barometer: 30.24-30.28
Precipitation: None
Sunrise: 6:56

Ruby-throated Hummingbird - 2
[Downy Woodpecker - 1 recaptured]
Northern House Wren - 2 (plus 1 recaptured)
Gray Catbird - 4
Swainson's Thrush - 2
Song Sparrow - 1
Nashville Warbler - 3
Common Yellowthroat - 2
Black-throated Blue Warbler - 1
Northern Cardinal - 1 (plus 1 recaptured)
Indigo Bunting - 1

No. of species captured: 11
No. banded: 19
No. recaptured: 3
No. released unbanded: 0
Capture Rate: 30.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Olive Ballard, Guadalupe Cummins, Audrey Haynes, Wren Haynes, Mary Jo McLellan, Blanche Wicke.

Visitors: 2

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 August Insects

Here is a gallery of some of the insects and other invertebrates we found during August within the banding area, including mostly common species but a few that are uncommon to rare.

Common Checkered Skipper (Burnsius communis)

Monarch (Danaus plexippus)





Silver-spotted Skipper (Epargyreus clarus)
Wild Indigo Duskywing (Erynnis baptisiae)






Zabulon Skipper (Lon zabulon), male




Zabulon Skipper (Lon zabulon), female











Spicebush Swallowtail (Papilio troilus)






Spicebush Swallowtail (Papilio troilus)










Question Mark (Polygonia interrogationis




Milkweed Tussock Moth (Euchaetes egle)



Pandorus Sphinx (Eumorpha pandorus)









Gray Furcula Moth (Furcula cinerea)








Halloween Pennant (Celithemis eponina)








Eastern Pondhawk (Erythemis simplicicollis), female







Eastern Pondhawk (Erythemis simplicicollis), male


Slaty Skimmer (Libellula incesta)









Widow Skimmer (Libellula luctuosa), male








Common Whitetail (Plathemis lydia), immature male



Goldenrod Soldier Beetles (Chauliognathus pensylvanicus)
Dogbane Leaf Beetle (Chrysochus auratus)

Swamp Milkweed Leaf Beetle (Labidomera clivicollis)

Thread-waisted Sand Wasp (Ammophila pictipennis)

Fraternal Potter Wasp (Eumenes fraternus)

Mexican Grass-carrying Wasp (Isodontia mexicana)

Carolina Grasshopper (Dissosteira carolina)

Differential Grasshopper (Melanoplus differentialis)

Tiger Bee Fly (Xenox tigrinus)

Chinese Mantis (Tenodera sinensis)

Banded Garden Spider (Argiope trifasciata)

6-inch long Leopard Slug (Limax maximus), non-native

=========================================================== 

Spring Bird Banding 2025 

The month of May was cooler than average, by about 10 degrees. Several days were in the 40s and 50s, where normally 50s and 60s, and even 70s, are expected. Also, winds were fairly strong on many days, making for some chilly conditions. About half of the banding days had very little cloud cover which made it more comfortable for banding volunteers, but combined with the wind made it easier for birds to see and avoid our nets. One banding day was rained out but was rescheduled, so no days were missed. Two days had some rain that reduced the number of hours of operation, and toward the end of the month fog and haze from Canadian wildfires was evident. The net lanes remained muddy for the entire month, and by the end of May the vernal pond with Wood Frog tadpoles was mostly dried up, and had hundreds of American Toad tadpoles as well. We pushed our opening time earlier as the month progressed, but by the end of May we were still just getting the nets open right at sunrise, rather than the 30 minutes before as had been our goal earlier in the spring.

One photo that I forgot to include on the April 27th entry was of this Butler's Garter Snake, which is a species of special concern in Michigan, and Belle Isle is a good place to see them. They were encountered on several days in April and early May, but this is the only day I got photos.

Butler's Garter Snake (Thamnophis butleri) 


Friday, May 2, 2025

There were several firsts for the season today, including this female Ruby-throated Hummingbird which was the first hummingbird banded on Belle Isle as previous banding efforts on the island were not in the appropriate season for them.

After hatch-year female Ruby-throated Hummingbird
It was also a good day for sparrows, with our first White-crowned Sparrow of the season among the 5 sparrow species captured today.

After hatch-year White-crowned Sparrow
This one had a lot of mud on its bill, hiding the bright orange that we expected to see. A Lincoln's Sparrow today was another sparrow first for the season.

After hatch-year Lincoln's Sparrow

 

After hatch-year Lincoln's Sparrow
As May begins, we expect to catch far fewer Hermit Thrushes (only one today) and start catching all the other species. This second-year Veery, aged by the retained buff-spotted juvenile wing coverts, was the first one this spring.

Second-year Veery
Yellow Warblers can sometimes be expected in late April, and they did indeed arrive on the island a few days before we caught our first one today.

After second-year female Yellow Warbler
Completely unexpected today, as they would be at any time, was not one but TWO Solitary Sandpipers. They do prefer wet patches in woodlands and open areas more than other shorebird species, but are always a treat to catch. Both were in the same net, but not at the same time.  

Second-year Solitary Sandpiper

Second-year Solitary Sandpiper

Second-year Solitary Sandpiper
I don't have a lot of experience with ageing this species in-hand, as these were only the 4th and 5th I've ever captured. Complicating the process is that they have a juvenile plumage in fall, which is very similar to the basic plumage of adults, and an alternate plumage in spring that is not significantly different. It was a team effort that led to both birds, with somewhat different-appearing upper wings (see photos below), being aged as second-year. I'm open to suggestions from more experienced banders on these.

Second-year Solitary Sandpiper (Bird #1)

Second-year Solitary Sandpiper (Bird #2)
A total of 6 species of warbler today was a sign of things to come, and the 14 Gray Catbirds banded was, well, a bit much! The four Tree Swallows captured today was an unexpected number.

Banding Results for May 2, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 59-67
Cloud Cover: 100-50-90%
Wind Direction: WSW
Wind Speed: 5-7-10 mph
Barometer: 29.76-29.81
Precipitation: None
Sunrise: 6:25

Ruby-throated Hummingbird - 1
Solitary Sandpiper - 2
Tree Swallow - 4
Ruby-crowned Kinglet - 1
Northern House Wren - 1
Gray Catbird - 14
Hermit Thrush - 1
Veery - 1
American Robin - 2
Yellow Warbler - 1
Yellow-rumped Warbler - 4
Palm Warbler - 5
Common Yellowthroat - 4
Ovenbird - 2
Northern Waterthrush - 2
Lincoln's Sparrow - 1
Swamp Sparrow - 5
Song Sparrow - 2 (plus 1 recaptured)
White-throated Sparrow - 15
White-crowned Sparrow - 1 (plus 1 released unbanded)
Red-winged Blackbird - 6 (plus 1 released unbanded)
[Brown-headed Cowbird - 1 recaptured]

No. of species captured: 22
No. banded: 75
No. recaptured: 2
No. released unbanded: 2
Capture Rate: 109.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Erin Ford, Dave Lancaster, Mark Schaller, Erika VanKirk, Blanche Wicke.

Visitors: 7 

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Sunday, May 4, 2025

Rain today forced us to close the nets after having them open only 3.5 hours. The second Ruby-throated Hummingbird of the season was banded today, this one an adult male. Lighting conditions weren't ideal for bringing out the colors of this species.

After hatch-year male Ruby-throated Hummingbird
The first Baltimore Oriole of the spring was right on time, and was a brilliant after second-year male.

After second-year male Baltimore Oriole
The first Wood Thrush of the spring was this second-year, aged by the buff-spotted retained juvenile wing coverts.

Second-year Wood Thrush
An unexpected capture, just as we were closing the nets ahead of the rain, was this Northern Rough-winged Swallow. If you click on the photo below, you just might be able to see the "rough" leading edge of the outermost primary wing feather. The pale-tipped wing coverts are retained juvenile feathers that indicate the age as second-year.

Second-year Northern Rough-winged Swallow
Banding Results for May 4, 2025

12 nets open 6:30 - 10:00 (42.0 net hours)
Temperature: 44-52
Cloud Cover: 80-100%
Wind Direction: N-NNE
Wind Speed: 7-10-15 mph
Barometer: 29.91-29.89
Precipitation: Trace of rain at close, rain forced early close
Sunrise: 6:22

Ruby-throated Hummingbird - 1
Warbling Vireo - 2
Northern Rough-winged Swallow - 1
Gray Catbird - 3 (plus 1 recaptured)
Wood Thrush - 1
American Robin - 1
Yellow Warbler - 1
Yellow-rumped Warbler - 2
Ovenbird - 1
[Song Sparrow - 1 recaptured]
White-throated Sparrow - 1
Baltimore Oriole - 1
Red-winged Blackbird - 2
[Brown-headed Cowbird - 1 recaptured]

No. of species captured: 14
No. banded: 17
No. recaptured: 3
No. released unbanded: 0
Capture Rate: 47.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Cass Arsenault, Alexa Blankenship, Mike Charlebois, Margaret Cortese, Guadalupe Cummins, Guy Lenk, Nolan Lenk, Nate Spala, Blanche Wicke.

Visitors: 0

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Thursday, May 8, 2025

Have you ever had the feeling that the weather was aiming directly at you? Well, today we had proof as the screen capture of the weather radar below shows...a line of rain coming right over Belle Isle.

 

 

 

 

 

 

 

 

 

 

 

 

 

We had to close the nets for an hour (7:30-8:30) due to rain, and even a few seconds of hail! That was not in the forecast at all for today! Luckily, the Detroit high school environmental studies class arrived after all this, and got to see several birds in-hand. One of the highlights was this adult male Black-throated Blue Warbler. 

After second-year male Black-throated Blue Warbler
The lighting conditions, the number of birds captured, and the number of visitors, made photographing other highlights difficult. Some of these included several Nashville Warblers, the first Least Flycatchers of the spring, several Ovenbirds and Northern Waterthrushes, the first Swainson's Thrushes of the spring, and a good number of Veeries. One of the Veeries, however, begged to be photographed, because the band number was not one of mine. 
After hatch-year Veery
 

I was happy to get the Certificate of Appreciation from the Bird Banding Lab showing that this Veery was banded on 19 August 2023 as a hatch-year, at Black Swamp Bird Observatory in northwestern Ohio. In banding terms, this is called a Foreign Recapture, and is a very rare occurrence. But is the second one since this station started in October 2024.

Veeries spend the winter in the Amazon, so this individual spent the winter of 2023-24 there after migrating from Ohio, then it migrated back north in spring 2024, then migrated back south again for the winter of 2024-25, and was recaptured on Belle Isle today on its second trip north to its breeding grounds. 

Banding Results for May 8, 2025

12 nets open 6:30 - 13:00 (66.0 net hours)
Temperature: 46-44-52
Cloud Cover: 100-20%
Wind Direction: NE
Wind Speed: 7-10-15 mph
Barometer: 30.17-30.20
Precipitation: Intermittent light rain (closed for 1 hour)
Sunrise: 6:17

Least Flycatcher - 2
Blue Jay - 1
Tree Swallow - 1
Ruby-crowned Kinglet - 4
Northern House Wren - 2
European Starling - 2
Gray Catbird - 10
Veery - 5 (plus 1 foreign recapture)
Swainson's Thrush - 2
[Wood Thrush - 1 recaptured]
[American Robin - 1 recaptured]
Nashville Warbler - 7
Yellow Warbler - 4
Yellow-rumped Warbler - 4
Black-throated Blue Warbler - 1
Common Yellowthroat - 1
Ovenbird - 8
Northern Waterthrush - 3
Lincoln's Sparrow - 4
Song Sparrow - 1
White-throated Sparrow - 12 (plus 1 released unbanded)
Baltimore Oriole - 2 (plus 1 recaptured)
Red-winged Blackbird - 2 (plus 1 released unbanded)

No. of species captured: 23
No. banded: 78
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 127.3 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Pierre Hendricks, Dave Lancaster, Blanche Wicke.

Visitors: 20

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Saturday, May 10, 2025

It was another chilly start today but warming up nicely for a change, and not too much wind. We had a group visit us today, the Oakland Bird Alliance young birders (The Owlets).

Oakland Bird Alliance young birders club
The Owlets, and their parents, got to see several species in-hand before moving into the nearby Nature Center for additional programming. It was a bit busy today so there are no photo highlights. Interesting captures included a Magnolia Warbler, a somewhat late Hermit Thrush, four Baltimore Orioles, and another Brown Thrasher (3rd of the season).  

Banding Results for May 10, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 49-75
Cloud Cover: 80-15%
Wind Direction: WSW
Wind Speed: 3-5-7 mph
Barometer: 30.14-30.09
Precipitation: None
Sunrise: 6:15

[Downy Woodpecker - 1 recaptured]
Least Flycatcher - 1
Warbling Vireo - 1
Blue Jay - 4
Tree Swallow - 2
European Starling - 1 (plus 2 released unbanded)
Gray Catbird - 4 (plus 1 recaptured)
Brown Thrasher - 1
Hermit Thrush - 1
Swainson's Thrush - 1
[Wood Thrush - 1 recaptured]
American Robin - 1 (plus 2 recaptured, 1 released unbanded)
Yellow Warbler - 6 (plus 2 recaptured)
Magnolia Warbler - 1
Common Yellowthroat - 2
[Northern Waterthrush - 1 recaptured]
Swamp Sparrow - 1
Baltimore Oriole - 4 (plus 1 recaptured)
Red-winged Blackbird - 7 (plus 2 released unbanded)

No. of species captured: 19
No. banded: 38
No. recaptured: 10
No. released unbanded: 5
Capture Rate: 73.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Wren Haynes, Erika VanKirk, Blanche Wicke.

Visitors: 19

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Friday, May 16, 2025

Today was more seasonal as far as temperatures, but with mostly clear skies all day and gradually increasing winds. Among the 8 species of warbler banded today was this nice Magnolia Warbler. Not the first of the season, but always worth a photo.

Second-year male Magnolia Warbler
Mourning Warblers are later migrants, so our first of the season today was just about on time.

After second-year male Mourning Warbler
The first Willow and Alder Flycatchers of the season were also banded today, and fortunately one of each keyed out using a formula comparing bill length with several measurements comparing certain primary wing feathers. It was a good day for Swainson's Thrushes with 7 banded, and we also had the first Gray-cheeked Thrush of the season.

After hatch-year Gray-cheeked Thrush
The clear highlights of the day were the two Orchard Orioles, both after second-year; one male and one female. They are likely breeding in the area as a male was heard singing from the banding station all season.

After second-year male Orchard Oriole

After second-year female Orchard Oriole
Banding Results for May 16, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 60-78
Cloud Cover: 20-0%
Wind Direction: S
Wind Speed: 3-5-10 mph
Barometer: 29.62-29.65
Precipitation: None
Sunrise: 6:09

Ruby-throated Hummingbird - 1
Willow Flycatcher - 1
Alder Flycatcher - 1
Blue Jay - 1
European Starling - 3 (plus 1 recaptured)
Gray Catbird - 5 (plus 1 recaptured)
Gray-cheeked Thrush - 1
Swainson's Thrush - 7
Nashville Warbler - 1
Yellow Warbler - 9
Magnolia Warbler - 3
American Redstart - 2
Common Yellowthroat - 5 (plus 1 released unbanded)
Mourning Warbler - 1
Ovenbird - 2
Northern Waterthrush - 1
Lincoln's Sparrow - 1
[Song Sparrow - 1 recaptured]
[White-crowned Sparrow - 1 released unbanded]
Orchard Oriole - 2
Baltimore Oriole - 2 (plus 1 recaptured)
Red-winged Blackbird - 7 (plus 2 recaptured, 1 released unbanded)
Common Grackle - 1
American Goldfinch - 1

No. of species captured: 23
No. banded: 58
No. recaptured: 6
No. released unbanded: 3
Capture Rate: 93.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Dave Lancaster, Blanche Wicke.

Visitors: 6

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Sunday, May 18, 2025

Temperatures today were close to normal for  the season, with variable clouds but windy. The wind was borderline for most of the day, but eventually became too strong by the time we closed. There is only a single photo highlight from today as I was occupied with holding down all the equipment on the banding table against the wind. That highlight was the first Wilson's Warbler of the spring.

After second-year male Wilson's Warbler
Other highlights today included two Ruby-throated Hummingbirds, the first Tennessee Warbler of the season, the second Mourning Warbler of the season, and flycatchers including Least and Alder. 

Banding Results for May 18, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 56-64
Cloud Cover: 20-80-40%
Wind Direction: W-NW
Wind Speed: 7-10-15 mph
Barometer: 29.75-29.87
Precipitation: None
Sunrise: 6:07

Ruby-throated Hummingbird - 2
Northern Flicker - 1
Least Flycatcher - 1
"Traill's" Flycatcher - 1
Alder Flycatcher - 1
Tree Swallow - 1
Northern House Wren - 2
European Starling - 2 (plus 1 recaptured, 1 released unbanded)
Gray Catbird - 7 (plus 1 recaptured)
[Brown Thrasher - 1 recaptured]
Swainson's Thrush - 1
American Robin - 1 (plus 2 recaptured)
Tennessee Warbler - 1
Yellow Warbler - 8 (plus 4 recaptured)
Magnolia Warbler - 2
Common Yellowthroat - 3
Mourning Warbler - 1
Wilson's Warbler - 1
[Song Sparrow - 1 recaptured]
Baltimore Oriole - 2 (plus 2 recaptured)
[Red-winged Blackbird - 1 released unbanded]

No. of species captured: 20
No. banded: 38
No. recaptured: 12
No. released unbanded: 2
Capture Rate: 72.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Dick Filby, Wren Haynes, Blanche Wicke, Sue Wright.

Visitors: 7

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Friday, May 23, 2025

Conditions today returned to chilly, sunny, and windy, as we've experienced more than we'd like this month. The result was a rather low capture rate today with the only highlights being the first Canada Warbler of the spring.

After second-year male Canada Warbler. Photo by Dick Filby
We had another Wilson's Warbler today too, this one a female.

Second-year female Wilson's Warbler. Photo by Dick Filby
Other highlights today included a late Veery, the 4th Brown Thrasher of the season, and a recaptured Wood Thrush suggesting that breeding might occur in the banding area. 

Banding Results for May 23, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 44-53
Cloud Cover: 20-100%
Wind Direction: NW-WNW
Wind Speed: 5-7-12 mph
Barometer: 29.92-29.96
Precipitation: None
Sunrise: 6:04

[Downy Woodpecker - 1 recaptured]
Blue Jay - 1
Gray Catbird - 3 (plus 1 recaptured)
Brown Thrasher - 1
Veery - 1
Swainson's Thrush - 6
[Wood Thrush - 1 recaptured]
American Robin - 1
Yellow Warbler - 1 (plus 4 recaptured)
Magnolia Warbler - 1
[Common Yellowthroat - 1 recaptured]
Wilson's Warbler - 1
Canada Warbler - 1
[Lincoln's Sparrow - 1 recaptured]
Song Sparrow - 1
Baltimore Oriole - 1 (plus 2 recaptured)
Red-winged Blackbird - 2 (plus 1 recaptured)

No. of species captured: 17
No. banded: 21
No. recaptured: 12
No. released unbanded: 0
Capture Rate: 45.8 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Jacob Charlebois, Mike Charlebois, Guadalupe Cummins, Dick Filby, Dave Lancaster, Erika VanKirk, Blanche Wicke.

Visitors: 7

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Sunday, May 25, 2025

Another chilly, sunny, somewhat windy day with not a lot of birds. We did have a good number of volunteers today (not everyone is in the photo below).

Despite the low number of birds captured, there were several highlights, including Ruby-throated Hummingbird, Least, Willow, and Alder flycatchers. We banded the third Mourning Warbler of the season today.

After second-year male Mourning Warbler
Late migrants were also captured including single Tennessee and Magnolia warblers, a Swainson's Thrush, and this Lincoln's Sparrow.

After hatch-year Lincoln's Sparrow
Breeding activity was also documented today, including the first fledged American Robins of the year.

Hatch-year American Robin
A non-bird highlight was two recently hatched Northern Water Snakes around the "vernal pond" in the road between nets 7 and 8 where there were hundreds of tadpoles.

Northern Water Snake (Nerodia sipedon)

Northern Water Snake (Nerodia sipedon)

Northern Water Snake (Nerodia sipedon)
Banding Results for May 25, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 45-62
Cloud Cover: 10-70%
Wind Direction: W-NW
Wind Speed: 1-3-12 mph
Barometer: 30.25-30.24
Precipitation: None
Sunrise: 6:01

Ruby-throated Hummingbird - 1
Least Flycatcher - 1
Willow Flycatcher - 2
Alder Flycatcher - 1
[Blue Jay - 1 recaptured]
Tree Swallow - 1
[Black-capped Chickadee - 1 recaptured]
[European Starling - 1 recaptured]
[Gray Catbird - 3 recaptured]
Swainson's Thrush - 1 (plus 1 recaptured)
American Robin - 1 (plus 1 recaptured)
Tennessee Warbler - 1
Yellow Warbler - 2 (plus 4 recaptured)
Magnolia Warbler - 2
Mourning Warbler - 1
Lincoln's Sparrow - 1
Song Sparrow - 1 (plus 1 recaptured)
Baltimore Oriole - 1 (plus 4 recaptured)
Red-winged Blackbird - 5 (plus 1 released unbanded)
Common Grackle - 1
American Goldfinch - 2

No. of species captured: 21
No. banded: 25
No. recaptured: 17
No. released unbanded: 1
Capture Rate: 59.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Jacob Charlebois, Mike Charlebois, Wren Haynes, Nate Spala, Erika VanKirk, Blanche Wicke, Nicholas Yerkes.

Visitors: 12

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Thursday, May 29, 2025

Seasonally normal temperatures, good cloud cover, light winds, and brief fog combined today for what I'd consider ideal conditions for banding. Two new species for the season were banded today, including four (!) Yellow-bellied Flycatchers.

After hatch-year Yellow-bellied Flycatcher
The other new species was a surprise in that we would normally expect Black-and-white Warblers earlier in the month.

After second-year female Black-and-white Warbler
Other interesting species captured today included an American Redstart, a Wilson's Warbler, a Veery, and three Swainson's Thrushes.  The vernal pond in the removed road between nets 7 and 8 was dwindling to an alarmingly small puddle. So, Wren decided to move them to a bigger area of water, since she just happened to have a dip net in her car (don't ask!). 

And insects were starting to become more prevalent. I was able to identify this interesting moth as a Delicate Cyncia Moth. 

Delicate Cyncia Moth (Cyncia tenera)
Banding Results for May 29, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 56-63
Cloud Cover: 100-20-90%
Wind Direction: SW-W
Wind Speed: 1-3-10 mph
Barometer: 30.01-29.98
Precipitation: Brief fog
Sunrise: 5:59

[Downy Woodpecker - 1 recaptured]
[Northern Flicker - 1 recaptured]
Yellow-bellied Flycatcher - 4
"Traill's" Flycatcher - 2
Alder Flycatcher - 1
Gray Catbird - 2 (plus 2 recaptured)
Veery - 1
Swainson's Thrush - 3
[American Robin - 1 recaptured]
Black-and-white Warbler - 1
Yellow Warbler - 4 (plus 2 recaptured)
American Redstart - 1
Common Yellowthroat - 1
Wilson's Warbler - 1
[Song Sparrow - 2 recaptured]
Baltimore Oriole - 3 (plus 1 recaptured)
Red-winged Blackbird - 3 (plus 1 recaptured)

No. of species captured: 16
No. banded: 27
No. recaptured: 11
No. released unbanded: 0
Capture Rate: 52.8 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Dick Filby, Wren Haynes, Pierre Hendricks, Elizabeth Watling, Blanche Wicke.

Visitors: 0

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Sunday, June 1, 2025

It was another chilly morning for our last day of banding. Another factor today was haze created by smoke from Canadian wildfires in Saskatchewan and Manitoba blowing over the Great Lakes, reducing air quality as well as darkening the skies somewhat. Continuing to band into the first few days of June is dictated by the fact that several species continue to migrate at that time. One of those late species is Canada Warbler, and the second of the season was banded today. Males have a bold black "necklace", while females are paler grayish there.

Second-year female Canada Warbler
American Redstarts actually start migrating fairly early in May, but have a longer migration period than some other species. They take two years to attain their bold black-and-orange breeding plumage, with second-year birds looking more female-like with mottled black on their faces and throats, and more orangey breast patches.

Second-year male American Redstart
Thrushes are often overlooked in early June, perhaps because many of them could be females (which migrate later than males) and are not singing. So sightings are rather rare, but capturing them at a banding station at this time is not uncommon. Today we had two Swainson's Thrushes and a single Gray-cheeked.

After hatch-year Gray-cheeked Thrush
An Eastern Wood-Pewee banded today was the first of the season, and was probably a local breeding individual. Breeding evidence today was provided by the capture of several recently fledged European Starlings as well as another American Robin and Gray Catbird females with incubation patches.

Banding Results for June 1, 2025

12 nets open 6:30 - 12:30 (72.0 net hours)
Temperature: 47-60
Cloud Cover: 95-100%
Wind Direction: WNW
Wind Speed: 3-5-10 mph
Barometer: 29.81-29.86
Precipitation: Haze
Sunrise: 5:57

Eastern Wood-Pewee - 1
Yellow-bellied Flycatcher - 1
"Traill's" Flycatcher - 1
European Starling - 4 (plus 2 recaptured, 2 released unbanded)
Gray Catbird - 3 (plus 5 recaptured)
Swainson's Thrush - 2
Gray-cheeked Thrush - 1
American Robin - 3
Song Sparrow - 2 (plus 2 recaptured)
[Yellow Warbler - 4 recaptured]
American Redstart - 1
Canada Warbler - 1
[Baltimore Oriole - 4 recaptured]
Red-winged Blackbird - 3 (plus 1 recaptured)
Brown-headed Cowbird - 1

No. of species captured: 15
No. banded: 24
No. recaptured: 18
No. released unbanded: 2
Capture Rate: 61.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Guadalupe Cummins, Danielle Hawkins, Wren Haynes, Nate Spala, Blanche Wicke.

Visitors: 7

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APRIL 2025 

Spring has begun, and the first week of April saw the beginning of the 2025 bird banding season at a new station for me, Belle Isle Bird Observatory in Wayne County, Michigan. This new site is at the east end of a road (Oakway Trail) that was removed about 3 years ago to improve the hydrology on the island. The site is also close to the Nature Center which allows for public education opportunities. It is hoped that this station will be operated long-term, and the plan is to train my replacement from the volunteers and interns of under-served communities in the Detroit area. The station consists of 12 nets set up in an area that is contained within a circle of approximately 10 acres. Six of the nets are on the edges of the removed roadside, and 6 are in an adjacent second-growth woodland. In the coming years, data will show how the regeneration of these roads affects the bird life using them. The banding table, currently operated out of the back of my car, is set up at the end of the parking lot for the ADA Playground, adjacent to the parking for the Nature Center.

To start, banding will be conducted two days each week, depending on weather and availability of volunteer assistants. The spring banding season will run from the first week of April to the first week of June, and the fall banding season will run from the first week of August to the first week of November. Nets will be opened for 6 hours, starting as early as is practical, attempting to be open by sunrise, or before. After getting the net poles set up on March 27th, we opened nets for the first time this spring on April 4th. What follows includes daily reports of results, and photo highlights.

 Friday, April 4, 2025

The weather in early April can sometimes be brutal, as winter is reluctant to give way to spring. My personal banding protocol early in the season is to not open nets unless it is at least 32 degrees. Mostly there are winter residents that can tolerate the cold, but care is always taken to avoid birds getting chilled, which can include more frequent net checks. Fortunately, this first day was chilly, but not cold, and we had a good opening day. I got to the site early to open 4 nets set up with audio lures to try to catch Northern Saw-whet Owls, which mainly migrate north during March, but my hope was that there might be some stragglers. That didn't happen this morning, but we had a good diversity of other species captured once the sun came up. As expected an over-wintering American Tree Sparrow was among the species captured.

After hatch-year American Tree Sparrow
With their rufous caps, they are sometimes confused with Chipping Sparrows, are almost non-existent in Michigan in winter. And in winter, Chipping Sparrows have a lot less rufous on their caps, and have pinkish bills (black in summer). The American Tree Sparrows have black-and-yellow bills, which can be seen well in the photo below.

After hatch-year American Tree Sparrow
Tree Sparrows also have a rufous stripe behind the eye, which is black in Chipping Sparrows. A more delicate species was an Eastern Phoebe, which is the northernmost wintering flycatcher species in eastern North America. None of them stay in Michigan during winter, but survive not too far south of us by feeding on berries rather than insects. This one did fine, and was banded and on its way in a few minutes.

After hatch-year Eastern Phoebe

A few Fox Sparrows overwinter in Michigan, but they are also early migrants. So it is not clear what the status was of this one banded today.

After hatch-year Fox Sparrow
A splash of color was provided by this Common Grackle, which is another early migrant with very small numbers over-wintering.

After second-year male Common Grackle
The most common species captured today was Red-winged Blackbird, followed by Song Sparrow and American Robin, all of which are early migrants. The two White-throated Sparrows captured today were almost certainly over-wintering as their spring migration typically peaks in the first week of May. 
After hatch-year Eastern Phoeb

We discovered some frog eggs in a small vernal pond in the middle of part of the removed road, which we determined were Wood Frog eggs. This photo shows one of the dozen or so egg masses.

Banding Results for April 4, 2025

12 nets open 6:45 - 12:45 (72.0 net hours), plus 4 nets open for audio luring from 5:45 - 6:45.
Temperature: 42-47
Cloud Cover: 0-100%
Wind Direction: N-NE
Wind Speed: 1-3-10 mph
Barometer: 30.29-30.35
Precipitation: None
Sunrise: 7:08

[Downy Woodpecker - 2 recaptured, banded last October]
Northern Flicker - 2 (plus 1 released unbanded)
Eastern Phoebe - 1
American Robin - 9 (plus 2 released unbanded)
[Black-capped Chickadee - 2 recaptured, banded last October]
American Tree Sparrow - 1
Fox Sparrow - 1
Dark-eyed Junco - 3
White-throated Sparrow - 2 (plus 2 released unbanded)
Song Sparrow - 9 (plus 1 recaptured - banded last October)
Red-winged Blackbird - 14 (plus 1 released unbanded)
Common Grackle - 1
Northern Cardinal - 1

No. of species captured: 13
No. banded: 44
No. recaptured: 5
No. released unbanded: 6
Capture Rate: 76.4 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Marilynn Crowley, Mark Schaller, Leah Stafford, Erika Van Kirk, Blanche Wicke.

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Sunday, April 6, 2025

Today was a bit colder and windier than the first banding day, but with good diversity although lower numbers. Several volunteers came out to help today. Here is a photo of them happily making the rounds to check nets in their winter attire.

Audio luring for owls was done again this morning, but no owls were caught. But the early start allowed us to hear American Woodcocks displaying before dawn, and once the nets were open 30 minutes before sunrise, we had one in the nets!

Second-year female American Woodcock
I walked her over to the edge of the woods to release her, and she slowly walked off as if she thought I couldn't see her. To be honest, she's not that easy to see in the photo below.

Second-year female American Woodcock
Brown Creepers are expected early migrants, with our first two captured today.

After hatch-year Brown Creeper
Less expected was this Field Sparrow, which is extremely scarce in Michigan in winter, so this was clearly a migrant, a bit early.

After hatch-year Field Sparrow
Field Sparrows can be told apart from American Tree Sparrows by their pink bills and prominent white eye ring.

After hatch-year Field Sparrow
More American Tree Sparrows were banded today, and new arrivals incl8uded Golden-crowned Kinglet, Hermit Thrush, and Swamp Sparrow.

Banding Results for April 6, 2025

12 nets open 6:30 - 12:30 (72.0 net hours), plus 4 nets open for audio luring from 5:30 - 6:30.
Temperature: 38-42
Cloud Cover: 100-80%
Wind Direction: N-NE
Wind Speed: 7-10 mph
Barometer: 30.11-30.11
Precipitation: None
Sunrise: 7:05

American Woodcock - 1
Northern Flicker - 1
Blue Jay - 1
[Tufted Titmouse - 1 recaptured, banded last October]
Golden-crowned Kinglet - 1
Brown Creeper - 2
Hermit Thrush - 1
European Starling - 4
American Tree Sparrow - 3
Field Sparrow - 1
Fox Sparrow - 1
Dark-eyed Junco - 1
White-throated Sparrow - 3
Swamp Sparrow - 1
Song Sparrow - 10 (plus 2 recaptured)
Red-winged Blackbird - 2

No. of species captured: 16
No. banded: 33
No. recaptured: 3
No. released unbanded: 0
Capture Rate: 50.0 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, Guadalupe Cummins, Mark Schaller, Ben Sehl, Blanche Wicke, Nicholas Yerkes.

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Friday, April 11, 2025

Today was another chilly and windy day, with lower numbers than the first two days. Little migration occurs this early in April. Three more Field Sparrows today were a pleasant surprise.

After hatch-year Field Sparrow
The day was dominated by winter residents and early migrants, including American Tree Sparrow, Dark-eyed Junco, Brown Creeper, and Fox Sparrow.

Banding Results for April 11, 2025

12 nets open 6:45 - 12:45 (72.0 net hours).
Temperature: 35-47
Cloud Cover: 100-20-40%
Wind Direction: N-NE
Wind Speed: 5-7-12 mph
Barometer: 30.17-30.18
Precipitation: None
Sunrise: 6:56

Brown Creeper - 2 (plus 2 recaptured)
American Robin - 2 (plus 3 recaptured)
American Tree Sparrow - 1
Field Sparrow - 3
Fox Sparrow - 1
Dark-eyed Junco - 1
White-throated Sparrow - 1 (plus 1 recaptured)
Song Sparrow - 2 (plus 3 recaptured)
Red-winged Blackbird - 2
Common Grackle - 1
Northern Cardinal - 2

No. of species captured: 11
No. banded: 18
No. recaptured: 8
No. released unbanded: 0
Capture Rate: 36.1 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews.Alexa Blankenship, Mike Charlebois, Marilynn Crowley, Diana Dugall, Erin Ford, Erika Van Kirk, Sue Wright.

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Sunday, April 13, 2025

Warmer conditions today brought some (human) visitors to the station for the first time this spring, as well as our first Tree Swallow.

After hatch-year male Tree Swallow
For the 4th banding day in a row, a Fox Sparrow was banded. And another Northern Flicker today was more than I had been expecting.

After second-year male Northern Flicker
The eastern subspecies used to be considered a separate species, called the Yellow-shafted Flicker, which is obvious when you see its spread wings.

After second-year male Northern Flicker
This also allows a bander to evaluate the bird's molt, with older and newer feathers appearing subtly different, and allowing it to be aged.

Banding Results for April 13, 2025

12 nets open 6:45 - 12:45 (72.0 net hours).
Temperature: 43-58
Cloud Cover: 90-40-70%
Wind Direction: WSW-SW
Wind Speed: 5-7-12 mph
Barometer: 30.14-30.07
Precipitation: None
Sunrise: 6:53

[Downy Woodpecker - 1 recaptured]
Northern Flicker - 1
Eastern Phoebe - 2
Blue Jay - 1
Tree Swallow - 1
American Robin - 2
[European Starling - 1 recaptured]
American Tree Sparrow - 1
Fox Sparrow - 1
White-throated Sparrow - 1 (plus 1 recaptured)
Song Sparrow - 1 (plus 1 recaptured)
Red-winged Blackbird - 4 (plus 1 released unbanded)
Northern Cardinal - 1 (plus 1 released unbanded)

No. of species captured: 13
No. banded: 16
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 30.6 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Danielle Hawkins, Wren Haynes, Vikay Kaz, Guy Lenk, Nolan Lenk, Mark Schaller, Sue Wright.

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Thursday, April 17, 2025

Winter asserted itself once again, with the coldest start so far. Volunteer assistants were still bundled up at the start of the day, but the temperatures reached into the 50s and the wind was not a factor for the first time this spring.

One of the highlights today was a nice female Yellow-bellied Sapsucker. Females have white throats while males have red throats.

Second-year female Yellow-bellied Sapsucker

Second-year female Yellow-bellied Sapsucker
Another highlight today was a female Eastern Towhee. This one had a reddish-brown eye but no signs of molt contrast, so was difficult to age more precisely than after hatch-year.

After hatch-year female Eastern Towhee
A few more Hermit Thrushes were banded today, and the streak of Fox Sparrows continued (5 days, 5 Fox Sparrows banded). More Field Sparrows and a Northern Flicker brought the season totals higher than was typical at my previous banding stations. A handful of visitors stopped by the station today.

Banding Results for April 17, 2025

12 nets open 6:45 - 12:45 (72.0 net hours).
Temperature: 34-55
Cloud Cover: 10-20%
Wind Direction: Calm-SE
Wind Speed: 0-5 mph
Barometer: 30.21-30.16
Precipitation: None
Sunrise: 6:47

Yellow-bellied Sapsucker - 1
Northern Flicker - 1
Golden-crowned Kinglet - 1
Brown Creeper - 1
Hermit Thrush - 3
American Robin - 3 (plus 3 recaptured)
European Starling - 1
Field Sparrow - 2
Fox Sparrow - 1
White-throated Sparrow - 3 (plus 3 recaptured)
Swamp Sparrow - 1
Song Sparrow - 5 (plus 3 recaptured)
Eastern Towhee - 1
Red-winged Blackbird - 2
Brown-headed Cowbird - 1
Northern Cardinal - 1 (plus 1 recaptured)

No. of species captured: 16
No. banded: 29
No. recaptured: 10
No. released unbanded: 0
Capture Rate: 54.2 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Nancy Butler, Mike Charlebois, Marilynn Crowley, David Dimitrie, Mark Schaller, Nate Spala, Blanche Wicke.

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Saturday, April 19, 2025

Finally, a day with normal temperatures for this time of year, although once again the wind was a factor. And rain was a factor too, although for most of the morning there were intermittent brief periods of light sprinkles, not lasting long enough to get out to close nets. But eventually the steady rain moved in, forcing us to close the nets an hour early. 

Today's highlights included some species we'd been hearing in the banding area for a couple weeks. One of those was a Brown Thrasher. 

Second-year Brown Thrasher

We had been hearing a Winter Wren singing for a couple weeks, and today finally caught one. It was overshadowed, though, by a rather early House Wren which we only started hearing singing today. Changes in bird names occur every year, and now our birds are called Northern House Wrens because those in South America are considered a separate species now (along with the ones on Cozumel, and on some islands in the Caribbean).

After hatch-year Northern House Wren
Yellow-rumped Warblers are among the earliest warblers to arrive, and we had been hearing them for about a week before finally catching one today.

After hatch-year male Yellow-rumped Warbler
Yet another Field Sparrow was banded today, along with several Hermit Thrushes and the first Ruby-crowned Kinglet of the season. The warm conditions brought out some dragonflies, all of them Green Darners which are migratory but also breed locally.

Green Darner (Anax junius)
The one caught in the nets today was quite fresh, so I'm guessing it was a local. Only a couple visitors came by today.

Banding Results for April 19, 2025

12 nets open 6:45 - 11:45 (60.0 net hours).
Temperature: 69-64
Cloud Cover: 100%
Wind Direction: SW-W
Wind Speed: 7-10-12 mph
Barometer: 29.78-30.00
Precipitation: Trace rain in a.m., rain forced early close
Sunrise: 6:43

Downy Woodpecker - 1
Northern Flicker - 1 (plus 1 released unbanded)
Ruby-crowned Kinglet - 1
Winter Wren - 1
Northern House Wren - 1
Hermit Thrush - 8
American Robin - 1
Brown Thrasher - 1
Yellow-rumped Warbler - 1
Field Sparrow - 1
White-throated Sparrow - 56 (plus 1 recaptured, 1 released unbanded)
Swamp Sparrow - 4 (plus 1 recaptured)
Song Sparrow - 3
Red-winged Blackbird - 2 (plus 1 recaptured)
[Northern Cardinal - 1 recaptured]

No. of species captured: 15
No. banded: 31
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 61.7 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Alexa Blankenship, Mike Charlebois, Guadalupe Cummins, Pierre hendricks, Nate Spala, Erika Van Kirk, Blanche Wicke.

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Thursday, April 24, 2025

The weather today swung to warmer than normal, resulting in good diversity that included three species of warbler, none of them the expected Yellow-rumped. Another early migrant warbler is the Palm Warbler, so the two banded today were pretty much on time.

 

After hatch-year male Palm Warbler
The extent of chestnut on the crown can be useful for determining the sex of Palm Warblers, but this is based on measurements not on an approximate visual assessment as there are many intermediates.

After hatch-year male Palm Warbler
The other two warbler species banded today were both somewhat early, including this Ovenbird. The pale fringes on the coverts and very narrow cinnamon edges on the tertials allowed it to be aged as second-year.

Second-year Ovenbird
A Northern Waterthrush today was also unexpected and early. 

After hatch-year Northern Waterthrush

The very similar Louisiana Waterthrush migrates earlier in April, with Michigan at the northern edge of its breeding range. But despite this bird's bright white supercilium, the spotting on the throat is diagnostic for Northern as Louisiana has a clean white throat (and a notably larger bill).

After hatch-year Northern Waterthrush
The first influx of migrant White-throated Sparrows came in today. Other highlights included a late American Tree Sparrow, and another Brown Thrasher. The season's second Eastern Towhee today was a male. 

Second-year male Eastern Towhee

This one was a good lesson in using more than one character to determine a bird's age. Eye color can be helpful, with juveniles in fall having brown eyes which can be either brown or red by the following spring. This one with red eyes was showing some duller primaries and secondaries mixed in with blacker ones, and also had a couple of juvenile-type coverts with tiny spots on them (not, it isn't a Spotted Towhee!). 

Second-year male Eastern Towhee

Another Tree Swallow was banded today, and also two non-natives; European Starling and House Sparrow. Many stations do not band non-natives, but given our location within an urban setting, we will band whatever birds we catch in the hopes that we will learn something, and allows for educational opportunities with the public. A handful of visitors stopped by today.

Banding Results for April 24, 2025

12 nets open 6:30 - 11:30 (72.0 net hours).
Temperature: 41-77
Cloud Cover: 10-50%
Wind Direction: WNW-SW
Wind Speed: 1-3-5 mph
Barometer: 30.18-30.14
Precipitation: None
Sunrise: 6:36

Northern Flicker - 1
Blue Jay - 1
Tree Swallow - 1
Ruby-crowned Kinglet - 1
Hermit Thrush - 4
American Robin - 1 (plus 1 recaptured)
Brown Thrasher - 1
European Starling - 1
House Sparrow - 1
Ovenbird - 1
Northern Waterthrush - 1
Palm Warbler - 2
American Tree Sparrow - 1
White-throated Sparrow - 12
Song Sparrow - 2 (plus 2 recaptured)
Eastern Towhee - 1
Red-winged Blackbird - 4 (plus 1 recaptured, 1 released unbanded)
Brown-headed Cowbird - 3 (plus 1 recaptured)

No. of species captured: 18
No. banded: 40
No. recaptured: 4
No. released unbanded: 2
Capture Rate: 63.9 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Mike Charlebois, Marilynn Crowley, Erin Ford, Blanche Wicke.

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Sunday, April 27, 2025

Today was near normal temperatures (a bit cool) with sunny conditions and yet again wind was a factor. A few warblers had come in since the 24th, as we had an increase in Yellow-rumped and Palms, along with two more somewhat early Northern Waterthrushes. A new species for the spring was a male Common Yellowthroat.

After second-year male Common Yellowthroat
Males with some mottled brown in the black mask are likely second-year birds, but those with all-black can be either second-year or after second-year. So, looking at the shape and wear of the primary coverts is necessary to determine their age more precisely. Some are intermediate so can only be aged as after hatch-year.

After second-year male Common Yellowthroat

The first Gray Catbird of the season was banded today, which had only recently arrived a few days before. 

Second-year Gray Catbird

A few visitors came by today, including the naturalist at the Nature Center with two dozen Girl Scouts. A noisy American Robin that I was banding at the time drew their attention, which allowed us to invite them over to watch it, and a recaptured Brown Thrasher, being processed at the banding table.

Banding Results for April 27, 2025

12 nets open 6:30 - 11:30 (72.0 net hours).
Temperature: 43-59
Cloud Cover: 0-20%
Wind Direction: W-NE
Wind Speed: 5-7-10 mph
Barometer: 30.32-30.33
Precipitation: None
Sunrise: 6:32

[Downy Woodpecker - 1 recaptured]
American Robin - 1
Gray Catbird - 1
[Brown Thrasher - 1 recaptured]
[European Starling - 1 recaptured]
Northern Waterthrush - 2
Common Yellowthroat - 1
Palm Warbler - 3
Yellow-rumped Warbler - 8 (plus 2 released unbanded)
Field Sparrow - 1
White-throated Sparrow - 8
Swamp Sparrow - 3 (plus 1 recaptured)
Song Sparrow - 1
Red-winged Blackbird - 9 (plus 1 recaptured, 1 released unbanded)
[Brown-headed Cowbird - 1 recaptured]

No. of species captured: 15
No. banded: 38
No. recaptured: 6
No. released unbanded: 3
Capture Rate: 65.3 per 100 net hours

Bander: Allen Chartier
Banding Assistants: Shelly Andrews, Alexa Blankenship, April Campbell, Mike Charlebois, Kaina Gonzalez, Guy Lenk, Nolan Lenk, Matthew Porter, Blanche Wicke.

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2 comments:

Thad said...

I captured a photo of a Song sparrow with a band at St. Clair Metropark on 10 Dec 2023 on the trails near the nature center. Unfortunately, the numbers cannot be read in the photo but it is clearly banded.

Allen Chartier said...

Thad, Thanks for mentioning this. Most Song Sparrows leave southeastern Michigan in the winter, but some to stay over the winter.