Friday, 22 May 2026

[cobirds] Chico Basin Ranch Banding Station Report- May 22, 2026-Bird Conservancy of the Rockies

Two Spring Seasons ago in 2024 on this date, there was 8-10" of snow at Chico on the ground. Every year is different and this is not any different. Spring banding numbers are up from the all- time low bird numbers last spring that I experienced and numbers are still lower than the previous two spring seasons. Today the Swainon's Thrushes made their appearance. I was glad to see them. Last spring they arrived very late and on the last banding date in May was our biggest catch. Weather definitely alters the bird's migratory pathways but other obstacles and environmental conditions can as well. Let's hope for a more normal spring.
 Twenty species of birds were banded including 2 more Veeries (Total of 4 banded this spring), and another Ovenbird.

108 New Banded Birds
Yellow Warbler- 11
Wilson's Warbler- 1
MacGillivray's Warbler- 9
Ovenbird- 1
Common Yellowthroat- 5
American Goldfinch- 4
Lesser Goldfinch- 1
Willow Flycatcher- 2
Western Wood-Pewee- 1
Lazuli Bunting- 4
Lincoln's Sparrow- 3
Swainson's Thrush- 43
Veery- 2
Mountain White-crowned Sparrow- 3
Blue Grosbeak- 1
Yellow-breasted Chat- 5
Black-headed Grosbeak- 7
Bullock's Oriole- 2
Gray Catbird- 1
Common Grackle- 2

3 Recaptures - same season banded
Lazuli Bunting
Swainson's Thrush
Yellow-breasted Chat
Bunting and Chat gained weight/ Swainson's Thrush lost .4 g since original band date.

The Banding station will be open tomorrow at sunrise until @11 AM. Please register on the Aiken Audubon website if want to visit/bird the ranch. www.aikenaudubon.com
Please stop by the banding station to share your sightings. We would love to hear bout them.

Have a good weekend,

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird conservancy of the Rockies

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[cobirds] Busy birds in Roxborough

It's been an interesting 3 months in Roxborough.

For starters, I've been hanging a hummingbird feeder for nearly 30 years and never had it taken down by a bear - until this year.

https://ring.com/share/d1ab7bc1-a151-418e-8309-b41de3c57c8f

It's now posted out of reach and I have at least 3 male Broad-tailed Hummers fighting over it.

I usually have a male Lazuli Buntings hanging around, but this year I've seen at least 3 along with a couple of females.

A mini-irruption of male Western Tanagers this year, 3-4 at a time. Multiple females as well.

Numbers of both American and Lesser Goldfinches are markedly up this year.

Most interestingly, the following two birds.

A Band-tailed Pigeon. A lifer for me and only spotted once - BIG, white blaze on the nape, and bright yellow feet.

What appears to be a male hybrid red-shafted / yellow-shafted flicker - red V on the back of the head AND red lores. Definitely red-shafted. Does this sound like a hybrid, or is it possible for a red-shafted flicker to have a red blaze on the back of the neck?

Jim Tyler
Roxborough Village

Thursday, 21 May 2026

[cobirds] Chatfield Banding Station, Bird Conservancy of the Rockies 5-21-26

We were back to banding this morning after our regular day off on Monday and then 2 more days off due to weather.  The number of new birds caught remained at about the same level as the previous week or so, but the diversity is up as we get later in the migration.  Eighteen species caught, including 5 first of seasons, for a total of 32 new and 3 returns:

Western Wood-pewee 3
Least Flycatcher 1 (FOS)
Western Flycatcher 2 (FOS)
Black-capped Chickadee 1
Swainson's Thrush 1
Hermit Thrush 1
Gray Catbird 5
Virginia's Warbler 1 (FOS, and first since 2023)
Yellow Warbler 1 new, 1 banded 2025
Yellow-rumped Warbler, Audubon's 1
American Redstart 1 banded 2023
MacGillivray's Warbler 2
Common Yellowthroat 5
Wilson's Warbler 1
Yellow-breasted Chat 2 new, 1 banded 2025
Lincoln's Sparrow 1
Lazuli Bunting 1 FOS
Bullock's Oriole 3 FOS

We are banding Tuesday through Sunday (closed Mondays) through May 31, weather permitting.  There are opportunities for the public to visit on weekends and early mornings most weekdays.  Reservations are required and can be made through the Denver Audubon website.  (Many/most sessions are already sold out, so sign up now if you are interested!)

Meredith McBurney
Bander, Bird Conservancy of the Rockies

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[cobirds] South Platte River Trail bird walk coming up

All:
          I'm going to open this walk up to the public:  As per CoBirds guidelines this if FREE and open to birders of all levels (beginners through experts).  Educational and for seeing an identifying birds by sight and sound.  

Wednesday May 27th -  Birding the South Platte River Trail near Adams County Fairgrounds.    We will walk on flat ground, sidewalks, and some gravel paths along the South Platte River that is a great area for orioles, kingbirds (both), herons, egrets, pelicans, bald eagles, yellow warblers, and many others.  This area is where I observed several orchard orioles for several weeks last summer.   

Approximately 4-5 miles of walking, restrooms near meeting point.  You can leave any time you wish.  Limit 12 people.  

Reply to me directly for reserving a spot.   Do not reply to Group Email.  
I will send meeting time, place, and what to bring.  

Thanks, 
John T (Tumasonis)  


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[cobirds] Chico Basin Ranch Banding Station Report- May 21, 2026-Bird Conservancy of the Rockies

The Banding station woods was loud with Western Kingbirds early but not much influx of birds until after 9:00 AM. We caught the Townsend's Solitaire that had been hanging out for the past 3 days in the area. More Bullock's Orioles, mainly the second-year males piled into the woods. Most were very fat so they are only stopping for the day and will not be here to breed.
Another Warbling Vireo was banded and the measurements were not such we could ID it to the Western or Eastern Warbling Vireo. 
All recaptured birds not breeding in the banding area increased their weight from their previous banding date. Just think if we had no birds how many insects and pests we would have! YAY birds!

47 New Banded Birds
Yellow Warbler- 5
Wilson's Warbler- 1
MacGillivray's Warbler- 1
Hammond's Flycatcher- 2
Western Flycatcher- 2
Western Wood-pewee- 1
Warbling Vireo- 1
Chipping Sparrow- 2
Mountain White-crowned Sparrow- 5
American Goldfinch- 2
Lincoln's Sparrow- 6
Lazuli Bunting- 1
House Finch- 1
Yellow-breasted Chat- 1
Townsend's Solitaire- 1
Hermit Thrush- 1
Swainson's Thrush- 2
Orchard Oriole- 1
Bullock's Oriole- 7
Green-tailed Towhee- 1
Black-headed Grosbeak- 1
Brown Thrasher- 1
Common Grackle- 1

8 Recaptures
Yellow Warbler- 2
American Goldfinch- 1
Lincoln's Sparrow- 1
Swainson's Thrush- 1
Yellow-breasted Chat- 1
Bullock's Oriole- 1
Gray Catbird- 1

The Banding station will be open tomorrow from sunrise until @11 AM. Hoping for a good movement of birds. 
Remember to register on the Aiken Audubon website if coming to bird the ranch.

Enjoy the Day!

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird Conservancy of the Rockies

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Wednesday, 20 May 2026

[cobirds] Colorado birder Amelie Anderson named 2026 ABA Young Birder of the Year

Hey, all.

Here's a news story from a short while ago on Colorado birder Amelie Anderson, recently named 2026 American Birding Association Young Birder of the Year:

https://www.9news.com/article/life/jefferson-county-7th-grader-national-young-birder-of-the-year/73-94edbb2d-2f82-4a77-9a1b-bd40dc43cfdd

While I have everybody's attention, here's a fun pic of Amelie and her birding buds at The Arsenal, of course, back on Feb. 22, 2026. L.–r.: Isabelle Busch, Topiltzin Martínez, Patrick O'Driscoll, Amelie (in purple jacket), me, Elena Klaver, Tykee James, Linda Lee, Eric Perryman, Lori Potter, Isaac Boardman.

arsenal_group_720.jpg

Ted Floyd
Lafayette, Boulder Co.




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[cobirds] Black-bellied Plover and Red-necked Phalarope at Cherry Creek State Park, Arapahoe Co.

Hello all,


An excellent day of birding at Cherry Creek State Park, Arapahoe County today with Cynthia Madsen and Dave Hill. We saw 17 species of shorebirds, which in my experience is a very good count for the park. Highlights were Black-bellied Plover and Red-necked Phalarope. There were two Black-bellied Plovers at Pelican Point, one in full breeding plumage. We made a count of 124 Red-necked Phalaropes. This count could be low as flocks of 10-50 birds were constantly moving around. They were seen mostly from the Prairie Loop west to the southeast corner of the Lake Loop. There were also astounding numbers of swallows, probably 1000 or more. They were everywhere, over the lake, along the shore, in the woods, and over the grasslands. They were mostly Barn, Cliff and Violet-green, with some Tree and a few Northern Rough-winged. Migrant passerine species (warblers, sparrows, etc.) were very few. Dave posted the full list to eBird.


Bob Andrews

Yekepa, Nimba Co., Liberia, West Africa

Currently in Centennial, Arapahoe Co.



[cobirds] Share Your Bird Photos for Colorado Birds! — Winter 2025–2026 (December 1 – February 28)

Hello CO Birders, Another quarter, another chance to share your best work! Colorado Birds, the quarterly journal of the Colorado Field Ornithologists, is now accepting photo submissions for our "News From The Field" feature. We're on the lookout for compelling images of rare, vagrant, or otherwise unusual birds documented in Colorado between December 1, 2025, and February 28, 2026 (see submission guidelines below).

To be considered in the upcoming issue, please send your highest-quality photos to george@cobirds.org no later than Thursday, May 28, 2026 — and be sure to follow the file-naming guidelines below when you do.

We'd particularly love to feature photos of these noteworthy species observed during this period:

Winter 2025–2026 (December 1 – February 28)

  • Brant
  • Mexican Duck
  • Surf Scoter
  • White-winged Scoter
  • Long-tailed Duck
  • Barrow's Goldeneye
  • Greater Roadrunner
  • Dunlin
  • Black-legged Kittiwake
  • Franklin's Gull
  • Iceland Gull (kumlieni)
  • Great Black-backed Gull
  • Glaucous-winged Gull
  • Red-necked Grebe
  • Pacific Loon
  • Red-throated Loon
  • Yellow-billed Loon
  • White-faced Ibis
  • Red-shouldered Hawk
  • Short-eared Owl
  • Acorn Woodpecker
  • Northern House Wren
  • Pacific Wren
  • Carolina Wren
  • Crissal Thrasher
  • Brambling
  • Cassia Crossbill
  • White-winged Crossbill
  • Snow Bunting
  • Chipping Sparrow
  • Field Sparrow
  • Fox Sparrow
  • Golden-crowned Sparrow
  • Bullock's Oriole
  • Rusty Blackbird
  • Ovenbird
  • Northern Waterthrush
  • Black-and-white Warbler
  • Tennessee Warbler
  • Orange-crowned Warbler
  • Nashville Warbler
  • Common Yellowthroat
  • Cape May Warbler
  • Northern Parula
  • Bay-breasted Warbler
  • Northern Yellow Warbler
  • Chestnut-sided Warbler
  • Black-throated Blue Warbler
  • Pine Warbler
  • Yellow-throated Warbler
  • Scarlet Tanager
  • Western Tanager
  • Northern Cardinal

Thanks for your contributions to Colorado Birds. Your dedication and generosity help maintain our journal's excellence, making it one of the country's finest. Thanks for sharing your photography with us!

George Mayfield
Photo Editor, Colorado Birds

Wheat Ridge, CO


Photo Submission Guidelines:

Photos from Winter 2025–2026 (December 1 – February 28)

Photos must be your own, and by submitting them, you give Colorado Birds permission to reproduce in any issue and on the CFO website. We always credit images with the photographer's name.

Please use the following format for the photo file names: species-date-location-county-photographer. For example, a photo of an American Robin taken Oct. 4, 2024 at Chatfield State Park by John James Audubon would be named as follows:

American Robin (or AMRO)-20241004-Chatfield-Adams-JJAudubon.

Minimum quality for interior publication use is 750 x 900 pixels. To be considered for the journal cover, photos must be at least 2625 pixels (vertically) x 1725 pixels (horizontally). Please send original files in the largest resolution possible (300 dpi is preferable). We will crop and resize as needed. Email your submissions to george@cobirds.org

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[cobirds] Chico Basin Ranch Banding Station Report- May 20, 2026-Bird Conservancy of the Rockies

A strange day weatherwise/birdwise which led to more birds being around after 10:30 AM today. No rain her after 4 AM but was cloudy most of morning with a couple peaks of the sunshine. Still not many birds as the day before but after 10:30 the banding woods was moving with birds. The sun did eventually come out fully after 11 AM. Anyway, those birding the woods after 11 AM were busy looking at the birds around. 
The Ovenbird was still singing near the banding building again today.

38 New Banded Birds
Wilson's Warbler- 1
Common Yellowthroat- 2
MacGillivray's Warbler- 1
Yellow-breasted Chat- 3
Northern House Wren- 1
Willow Flycatcher- 1
Dusky Flycatcher- 2
Western Flycatcher- 1
Lincoln's Sparrow- 2
Mountain White-crowned Sparrow- 1
American Goldfinch- 4
Swainson's Thrush - 9
Western Tanager- 2
Gray Catbird- 2
Bullock's Oriole- 2
Black-headed Grosbeak- 3
Brown Thrasher- 1

9 Recaptures
MacGillivray's Warbler- 3
Yellow-breasted Chat- 1
Lincoln's Sparrow- 1
Swainson's Thrush- 2
Bullock's Oriole- 1
Least Flycatcher-1

1Return from spring 2025
Yellow Warbler female

Hoping the weather will push out the birds hanging around for several days and bring in more new ones to the banding woods. 
The Banding station will be open tomorrow from sunrise until @11 AM. 
Stop by and share your bird sightings with us.
Register to bird on the ranch at Aiken Audubon website www.aikenaudubon.com
Remember there is limited cell service out there so if unfamiliar with the areas to bird, Please take a pic or download the map on the website.

Have a good day,

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird conservancy of the Rockies

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[cobirds] Aiken Audubon hybird mtg tonight: Corvids + Conifers: Pinyon Jays in WY's Bighorn Basin

MAY MONTHLY MEETING TONIGHT: CORVIDS AND CONIFERS - 
PINYON JAYS IN WYOMING'S BIGHORN BASIN


In 2024, the Draper Natural History Museum, in partnership with the Bureau of Land Management, Museum of Wildlife and Fish Biology at the University of California, Davis, Northwest College, and the US Fish and Wildlife Service initiated a study to characterize habitat use by Pinyon Jays across limber-pine woodlands in Wyoming’s Bighorn Basin. In this presentation, join Corey Anco as he shares highlights from the first few field seasons of this project and explores the Pinyon Jay’s curious relationship with seed-bearing pines.
This is a hybrid meeting: in-person at the Colorado Parks & Wildlife Office; 4255 Sinton Road,  Colorado Springs  80907. Our entrance to the building is located on the EAST side (back side) of the building; not the main entrance. Parking is encouraged in the south and west parking lots.

Doors Open 6:30pm
Snacks & Bird Talk (meet & mingle) 6:45pm
Meeting announcements 7:00pm
Program Presentation 7:15pm

Join Zoom Meeting:
click here to join
Meeting ID: 577 018 0765
Passcode: WESO

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Tuesday, 19 May 2026

Re: [cobirds] ID help please! Juvie Peregrine or a Prairie Falcon?

As suggested to me by Dave Leatherman, that looks more like an Eurasian Hobby. I've sent a screen grab to a Brit friend in Connecticut for his opinion.

Tony Leukering
Cut Bank, MT

On Tuesday, May 19, 2026 at 4:25:47 PM UTC-6 Peter Ruprecht wrote:
I'd go with immature Peregrine. The malar is too wide for a Prairie, and I'd expect a Prairie of any age to have a more distinct light supercilium.

Peter Ruprecht
Superior

On Tue, May 19, 2026 at 3:37 PM <jay...@gmail.com> wrote:
All:

I'm a bit stumped on this ID.  Seen this morning in a filed just north of Union Res in Weld Co.  Bird was sitting in the field  for 10+minutes and I got a few pics from scope. 

So I figure it's either a juvenille Peregrine or a Prairie Falcon. Obvious dark mustache, white cheeks and throat. 

Please comment away!

Jay Hutchins
Longmont

image0.jpegimage1.jpegimage2.jpegimage3.jpeg


Sent from my iPhone

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Re: [cobirds] ID help please! Juvie Peregrine or a Prairie Falcon?

I'd go with immature Peregrine. The malar is too wide for a Prairie, and I'd expect a Prairie of any age to have a more distinct light supercilium.

Peter Ruprecht
Superior

On Tue, May 19, 2026 at 3:37 PM <jay1125@gmail.com> wrote:
All:

I'm a bit stumped on this ID.  Seen this morning in a filed just north of Union Res in Weld Co.  Bird was sitting in the field  for 10+minutes and I got a few pics from scope. 

So I figure it's either a juvenille Peregrine or a Prairie Falcon. Obvious dark mustache, white cheeks and throat. 

Please comment away!

Jay Hutchins
Longmont

image0.jpegimage1.jpegimage2.jpegimage3.jpeg


Sent from my iPhone

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[cobirds] Chico Basin Ranch Banding Station Report- May 19, 2026-Bird Conservancy of the Rockies

If it is raining in your neck of the woods, it most likely will not be raining at Chico Basin Ranch at least the El Paso County side. I probably just jinxed that fact. HA!
Anyhow, despite rain and snow flurries everywhere else or so it seemed from what the volunteers and birders told me, it was not raining or snowing at sunrise nor did it during the morning at all. Tomorrow may be another story but right now, it doesn't look like any rain at sunrise.
Twenty-three bird species were captured including five species of warbler including: Wilson's, Yellow, MacGillivray's, Audubon's Yellow-rumped Warblers and two Northern Waterthrush. An Ovenbird sang off an on all morning near the banding building.
We also caught a Warbling Vireo, took its measurements to help distinguish between Western and Eastern Warbling Vireos. The measurements did not help us to differentiate. However, when getting photos of the bird, it sang a little ad when it was released it flew to a nearby branch and sang a Western song (Had a little twang it its song- just kidding). So a Western Vireo it was! Thank you Bird for singing for us.

81 Birds Banded
Wilson's Warbler- 6
Yellow Warbler- 6
MacGillivray's Warbler- 3
Northern Waterthrush- 2
Audubon's Yellow-rumped Warbler- 4
Northern House Wren- 1
Willow Flycatcher- 1
Western Wood-pewee- 1
Western Warbling Vireo- 1
Lesser Goldfinch- 1
American Goldfinch- 15
House Finch- 2
Lincoln's Sparrow- 5
Lazuli Bunting- 2
Mountain White-crowned Sparrow- 2
Veery- 2
Swainson's Thrush- 15
Hermit Thrush- 2
Yellow-breasted Chat- 3
Black-headed Grosbeak- 3
Bullock's Oriole- 3
Common Grackle- 1

3 Recaptures
American Redstart- gained almost a grams since yesterday!
Hermit Thrush
Bullock's Oriole

The Banding station will be open tomorrow weather dependent at sunrise until @ 11 AM.
Please stop by the banding station and share your sightings with us. We would love to hear about them. 
Please sign up on the Aiken Audubon website if wanting to bird the ranch. www.aikenaudubon.com. Also remember cell service is very poor out there so download the map or stop by the banding station and look at the laminated map we have to get your bearings while driving around the ranch. 

Enjoy the Day,

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird Conservancy of the Rockies

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Re: [cobirds] Dead swalow- Longmont

I've only seen one Violet-green swallow here in Highlandlake and that was several years ago. It also appeared to just fall out of the sky - dead. They are such beautiful birds.

I haven't seen any swallows of any kind here this year. It is strange, we live on a lake and there are plenty of nesting areas that they have come back to year after year. I wonder what happened to them?

Pauli Smith
Highlandlake/Mead, Weld, CO

From: cobirds@googlegroups.com <cobirds@googlegroups.com> on behalf of David Hyde <davidhyde1951@gmail.com>
Sent: Tuesday, May 19, 2026 1:20 PM
To: Charlie Chase <charlesachase3@gmail.com>; Colorado Birds <cobirds@googlegroups.com>
Subject: Re: [cobirds] Dead swalow- Longmont
 
Thank you all for what to do with this swallow. i shall freeze it and note details and take it to Emily Braker at the UC Boulder Museum. This is closer to me than Denver. An interesting thing about this dead Violet-green swallow is that there were (are) hundreds of Barn Swallows and Cliff swallows, a few Tree swallows around the lake and NO Violet-green swallows except this dead and still warm one which was on the grass near the monument on the south side of Lake McIntosh. And I never see VG swallows on this lake before... Last year I found a dead Raven closeby this spot and it, too, was still warm and in perfect condition. I wasn't able to keep it (I've been warned by my fam before about keeping dead birds in the fridge...), but that's two perfectly healthy looking birds just falling out of the sky! Thanks again - Dave/Longmont
    Here's a photo of the swallow on the Lake McIntosh monument:

P1190321.JPG

On Tue, May 19, 2026 at 12:24 PM Charlie Chase <charlesachase3@gmail.com> wrote:
I sent him a personal message already-- thanks for forwarding this.  Had him contact DNMH Zoology Dept.

Cheers
C




On Tue, May 19, 2026 at 12:10 PM Susan Rosine <u5b2mtdna@gmail.com> wrote:
I've copied Charlie Chase on this. He may know of a place that will take it.

Susan Rosine 

On Tue, May 19, 2026, 10:43 AM David Hyde <davidhyde1951@gmail.com> wrote:
Walking along the edge of Lake McIntosh in Longmont just now I spotted hundreds of different swallows on the ground and in the air. And I found this dead one, which I think is a Violet-green swallow. It was just lying on the ground, sill warm and bright eyed. I brought it home. My question is, is there anyone who wants a dead swallow or what should I do with it? -- Dave Hyde/Longmont

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[cobirds] ID help please! Juvie Peregrine or a Prairie Falcon?

All: I'm a bit stumped on this ID. Seen this morning in a filed just north of Union Res in Weld Co. Bird was sitting in the field for 10+minutes and I got a few pics from scope. So I figure it's either a juvenille Peregrine or a Prairie Falcon. Obvious dark mustache, white cheeks and throat. Please comment away! Jay Hutchins Longmont Sent from my iPhone -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/8D7BDEBD-B5A5-44D1-98C8-4E662C6DABAB%40gmail.com.

Re: [cobirds] Dead swalow- Longmont

Thank you all for what to do with this swallow. i shall freeze it and note details and take it to Emily Braker at the UC Boulder Museum. This is closer to me than Denver. An interesting thing about this dead Violet-green swallow is that there were (are) hundreds of Barn Swallows and Cliff swallows, a few Tree swallows around the lake and NO Violet-green swallows except this dead and still warm one which was on the grass near the monument on the south side of Lake McIntosh. And I never see VG swallows on this lake before... Last year I found a dead Raven closeby this spot and it, too, was still warm and in perfect condition. I wasn't able to keep it (I've been warned by my fam before about keeping dead birds in the fridge...), but that's two perfectly healthy looking birds just falling out of the sky! Thanks again - Dave/Longmont
    Here's a photo of the swallow on the Lake McIntosh monument:

P1190321.JPG

On Tue, May 19, 2026 at 12:24 PM Charlie Chase <charlesachase3@gmail.com> wrote:
I sent him a personal message already-- thanks for forwarding this.  Had him contact DNMH Zoology Dept.

Cheers
C




On Tue, May 19, 2026 at 12:10 PM Susan Rosine <u5b2mtdna@gmail.com> wrote:
I've copied Charlie Chase on this. He may know of a place that will take it.

Susan Rosine 

On Tue, May 19, 2026, 10:43 AM David Hyde <davidhyde1951@gmail.com> wrote:
Walking along the edge of Lake McIntosh in Longmont just now I spotted hundreds of different swallows on the ground and in the air. And I found this dead one, which I think is a Violet-green swallow. It was just lying on the ground, sill warm and bright eyed. I brought it home. My question is, is there anyone who wants a dead swallow or what should I do with it? -- Dave Hyde/Longmont

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[cobirds] Dead swalow- Longmont

Walking along the edge of Lake McIntosh in Longmont just now I spotted hundreds of different swallows on the ground and in the air. And I found this dead one, which I think is a Violet-green swallow. It was just lying on the ground, sill warm and bright eyed. I brought it home. My question is, is there anyone who wants a dead swallow or what should I do with it? -- Dave Hyde/Longmont

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[cobirds] Hooded oriole

A hooded oriole visited our feeders yesterday. Littleton, Douglas County Sent from my iPad -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/68E3E98B-1586-4723-8781-A2F5ACE0B076%40gmail.com.

Monday, 18 May 2026

[cobirds] Chico cattle update El Paso/Pueblo Counties

Greetings, birders,

If you're headed to Chico Basin Ranch in the next 2 weeks, please be aware that cattle will be pastured in an area including the Banding Station parking area.

The cattle will move out of the way if you drive slowly toward them, and they won't harm you, but if you're nervous around them, you may drive through the gate on the north side of the Banding Station area and park near the banding station.

Remember that we're limited to parking in only 3 locations: the Banding Station, HQ pond (please do NOT drive into the HQ parking area, but continue south and park in the grass near the pond), and Rose Pond (further south on the main road). Please do not drive to any other area of the ranch.

We are working on getting additional signage up to help guide birders.

If you have any questions, don't hesitate to contact me.

Linda Hodges
Aiken Audubon

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[cobirds] letting go ! (re my Eco-steward trails in the Boulder/Lyons area)

Dear folks: I've reached my limits in hiking long or challenging trails to survey birds, butterflies, plants (often weeds) as well as recreation use. My limits are physical and certainly not boredom or discouragement. I have loved surveying these trails several times in each avian breeding season: before (May), during (June) and after (July). I've taken notes on all the aspects mentioned above, learned much, and found many observations useful in giving input to the decision-makers who oversee the condition of the areas. (This data collection has really come in handy when management of our areas is up for discussion by various boards). I especially treasured the early morning hours when I had these popular trails to myself and the owls or poorwills, and often the turkeys and deer. If anyone out there would be interested in assuming these surveys, and making a season's-end report to the compiler, I guarantee satisfaction of many kinds. The 30+ Ecostewards that have accepted to do these surveys and report on them have been doing so for a couple of decades under the auspices of Boulder County Nature Association. Steve Jones has been our inspiration, mentor and compiler. The objective was simply to monitor all the aspects we felt capable of surveying, and turning in reports at season's end. Here are "my" trails/areas in question: PICTURE ROCK TRAIL from south Lyons to 4 or 5 miles further south. Long, slow rolling hike with superb views for the first hour or so, then ascending to wooded hillside savannas with a different habitat for both birds & plants. Many butterfly species; delightful botanical variety--gorgeous grasses. Few hikers; scattered long-distance runners; but mostly bikers unless you go early in the morning during the week. Often I saw almost no bikers! In order to get more data on users, I had to do a hike on popular weekends.... For the most part, cyclists were polite and in compliance with trail use regs. GREGORY CANYON from Boulder TH on Flagstaff to the "top" and then down to the shady trails on the west side. This has always been a great site for interesting accidentals (birds or animals you do NOT expect to find), including once a pair of bikers who were trying to get to the 5-Points area on a trail that is in no way a good (or legal) one for bike use. It is a steep and rocky hike of about 3 miles out and back, but interesting in so many ways--you'll have to call me to learn more. I've seen/heard Blue-headed Vireos, Saw-whet Owls, Scarlet Tanagers, Kentucky Warblers & others but the typical residents are multiple and vocal. It's a gem, this hike. Please contact me (PM/DM) off listserv to learn more. The assignment will enrich your life! Linda Andes-Georges central Boulder County in shortgrass prairie beside Table Mountain -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/16473365-FCEC-4190-90AB-EEC3BD81D9B0%40comcast.net.

Re: [cobirds] Chico Basin Ranch Banding Station Report- May 18, 2026-Bird Conservancy of the Rockies

Wow!!!!!!!
Rest up for tomorrow!

On Mon, May 18, 2026, 2:20 PM Chicobander <jshieldcastle@gmail.com> wrote:
The weather may have not been pleasant today- It was a little brisk at times. It appeared that the storms up north helped drop some birds into the banding woods today. Twenty-four bird species captured and five new species for the year (American Redstart, Least, Hammond's, and Willow Flycatchers, Western Wood-pewee, and Warbling Vireo). 

The Warbling Vireo has been split into Eastern and Western Warbling Vireo. Unless it sings for me, I have to band it as unknown Warbling Vireo. We are taking measurements and Tail feathers for DNA work to hopefully have someone work up the Warbling Vireo data to help us banders distinguish between the Eastern and Western Warbling Vireos. We can catch both here at the station. We do not catch many in a season but hope in the future more morphometrics will help determine between the two.

As you can tell from the banding data below, we had several flocks of American goldfinches flying through the banding area this morning. We are still catching Hermit Thrushes as well. Two Ovenbirds graced us with their presence in the nets and one continued to sing near the building off and on during the morning.

97 New Banded Birds
Wilson's Warbler- 5
Yellow Warbler- 12
American Redstart- 1
MacGillivray's Warbler- 5
Ovenbird- 2
Common Yellowthroat- 1
Audubon's Yellow-rumped Warbler- 1
Warbling Vireo- 1
Western Flycatcher- 3
Western Wood-Pewee- 3
Least Flycatcher- 1
Hammond's Flycatcher- 2
Willow Flycatcher- 1
American Goldfinch- 22
Lincoln's Sparrow- 7
Lazuli Bunting- 4
House Finch- 1
Yellow-breasted Chat- 1
Western Tanager- 3
Hermit Thrush -5
Swainson's Thrush- 7
Black-headed Grosbeak- 2
Gray Catbird- 2
Bullock's Oriole- 5

5 Recaptures
Bullock's Oriole- 3 - one of these lost weight but since they are breeding here they are expending energy fighting for mates, etc.
American Goldfinch- 1
Yellow Warbler- 1

1 Return
Yellow Warbler male banded last year as a Second-year male on May 17th.  Returned to the same area to breed again!

The Banding station will be open tomorrow through Saturday weather permitting from sunrise until @ 11AM. Remember if you want to bird the ranch to please register on the Aiken Audubon Website www.aikenaudubon.com.
Also if you have never birded the ranch make sure you look at the map provided on the website OR come to the banding station to see the posted map in the building. We have had quite a few new birders to the ranch this past week and they have wandered into areas of private residences. We need to be cognizant of the map and where you can bird. We do not want to upset the ranchers and have our privileges revoked. 
Thank you.
Also, gates around the banding building need to be closed after entry as cattle is now grazing outside the woods around banding station.
Stop by the Banding station to share your sightings. We would love to hear them!

Have a good day,

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird Conservancy of the Rockies

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[cobirds] Chico Basin Ranch Banding Station Report- May 18, 2026-Bird Conservancy of the Rockies

The weather may have not been pleasant today- It was a little brisk at times. It appeared that the storms up north helped drop some birds into the banding woods today. Twenty-four bird species captured and five new species for the year (American Redstart, Least, Hammond's, and Willow Flycatchers, Western Wood-pewee, and Warbling Vireo). 

The Warbling Vireo has been split into Eastern and Western Warbling Vireo. Unless it sings for me, I have to band it as unknown Warbling Vireo. We are taking measurements and Tail feathers for DNA work to hopefully have someone work up the Warbling Vireo data to help us banders distinguish between the Eastern and Western Warbling Vireos. We can catch both here at the station. We do not catch many in a season but hope in the future more morphometrics will help determine between the two.

As you can tell from the banding data below, we had several flocks of American goldfinches flying through the banding area this morning. We are still catching Hermit Thrushes as well. Two Ovenbirds graced us with their presence in the nets and one continued to sing near the building off and on during the morning.

97 New Banded Birds
Wilson's Warbler- 5
Yellow Warbler- 12
American Redstart- 1
MacGillivray's Warbler- 5
Ovenbird- 2
Common Yellowthroat- 1
Audubon's Yellow-rumped Warbler- 1
Warbling Vireo- 1
Western Flycatcher- 3
Western Wood-Pewee- 3
Least Flycatcher- 1
Hammond's Flycatcher- 2
Willow Flycatcher- 1
American Goldfinch- 22
Lincoln's Sparrow- 7
Lazuli Bunting- 4
House Finch- 1
Yellow-breasted Chat- 1
Western Tanager- 3
Hermit Thrush -5
Swainson's Thrush- 7
Black-headed Grosbeak- 2
Gray Catbird- 2
Bullock's Oriole- 5

5 Recaptures
Bullock's Oriole- 3 - one of these lost weight but since they are breeding here they are expending energy fighting for mates, etc.
American Goldfinch- 1
Yellow Warbler- 1

1 Return
Yellow Warbler male banded last year as a Second-year male on May 17th.  Returned to the same area to breed again!

The Banding station will be open tomorrow through Saturday weather permitting from sunrise until @ 11AM. Remember if you want to bird the ranch to please register on the Aiken Audubon Website www.aikenaudubon.com.
Also if you have never birded the ranch make sure you look at the map provided on the website OR come to the banding station to see the posted map in the building. We have had quite a few new birders to the ranch this past week and they have wandered into areas of private residences. We need to be cognizant of the map and where you can bird. We do not want to upset the ranchers and have our privileges revoked. 
Thank you.
Also, gates around the banding building need to be closed after entry as cattle is now grazing outside the woods around banding station.
Stop by the Banding station to share your sightings. We would love to hear them!

Have a good day,

Julie Shieldcastle
Bander, Chico Basin Ranch
Bird Conservancy of the Rockies

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[cobirds] A Big Day at CSR banding, El Paso Co, Mon

Hey COBirders, I was hopeful that the mixed forecasts we got might mean we’d get some birds at Clear Spring Ranch today. It did. While it was wet in COS at dawn, CSR was dusty dry. Low clouds all morning, and a helpful breeze kept birds arriving throughout the morning, new, and many returning birds as well. 55 birds netted today. I closed at 10:30 as forecasts showed rain was likely after that, and I didn’t want to take a chance getting caught with full nets up, and the possibility of wet birds. It worked out fins. Highlights today: FOS Dusky Flycatcher - 2 FOS Magnolia Warbler (SY M) FOW American Redstart (AD F) Yellow Warbler -10 (including a wave of 5 in one net at 9:00, and 2 returns) Com Yellowthroat - 8, (including 2 returns from previous years) MacGillivray’s Warbler - 3 Wilson’s Warbler - 2 Lincoln’s Sparrow - 8 Mountain White-crowned Sparrow - 3 Lazuli Bunting - 4 Gray Catbird - 5 (including 2 returns) and netted, but unbanded - Broad-tailed Hummingbird (AD M), and Black-chinned Hummingbird (AD F). BTW, this also the anniversary of my best/most fun/busiest day banding - May 18, 2008, at Chico Basin Ranch, on a day much like today, only mistier, and breezier, Brian Gibbons and I banded 240 birds, including 140 Swainson’s Thrush. We started at dawn, closed nets at 3:30, and finished banding the last birds about 5:00, with no breaks. It was busy! The haul also included 8 Blackpoll Warblers, a pretty high number for Colorado. Yeah, I really look forward to these May days! Happy Migration, Steve Brown Colo SPgs -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/6AAB1D1E-5600-480C-84C8-FA05939BA189%40gmail.com.

[cobirds] Chatfield Banding Station, Bird Conservancy of the Rockies 5-17-26

We ended our third week yesterday, with more of the regulars; lots of Yellow Warblers and Catbirds, no new species.  It is great to be off today when it is raining so nicely!

Here are the 31 new and 5 returns from Sunday:

Western Wood-Pewee 2
Black-capped Chickadee 1 new, 2 returns, both banded last fall (our first ever fall banding at Chatfield)
Northern House Wren 1 new, 1 banded 2024, recaught 2025
Gray Catbird 12 new, 1 banded 2025
Yellow Warbler 8 new, 1 banded 2025
MacGillivray's Warbler 1
Common Yellowthroat 2
Wilson's Warbler 1
Yellow-breasted Chat 1
Song Sparrow 1
White-crowned Sparrow, Mountain 1

We are banding Tuesday through Sunday (closed Mondays) through May 31, weather permitting.  There are opportunities for the public to visit on weekends and early mornings most weekdays.  Reservations are required and can be made through the Denver Audubon website.  (Many/most sessions are already sold out, so sign up now if you are interested!)

Meredith McBurney
Bander, Bird Conservancy of the Rockies

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Sunday, 17 May 2026

[cobirds] New BIRD BOMBS video available, and register for the next one!

Hi CoBirders,

The video of DFO's newest BIRD BOMBS Knock on wood is now available for viewing. Learn about identification of Colorado's woodpeckers.

And you can register now for the next explosion BIRD BOMBS Habitat Blast: Alpine Living, set to go off at 7pm on June 25. Explore the bird communities above tree line and in the highest tier of subalpine forest. 

David Suddjian
Littleton, CO

BIRD BOMBS Alpine Living 6-25-26.png


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[cobirds] recent posts to COBIRDS

I spent about 4 hours composing a post to COBIRDS this morning and then received a message from GoogleGroups that it couldn’t be sent because it was too big.  After a bleep-punctuated period of frustration that my apartment neighbors probably overheard, I sat down and composed a smaller one.  Now I see that BOTH posts went out.  Sorry for the duplication but it’s not my fault.

 

Dave Leatherman

Fort Collins 

[cobirds] Glenmere Park, Greeley

I stopped at Glenmere Park and scanned the island carefully and saw at least 6 black crowned night herons hiding in the trees, mostly on the east side. I did not find any snowy egrets as in past years.
Rick Reeser
Milliken

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[cobirds] Snowy & black-bellied lovers at Union Res., Weld.Co.

One of each of the above in the NW corner of Union Res as of 8:30 am this morning. Jay Hutchins Longmont Sent from my iPhone -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/62C59373-3D87-4DE8-BC3A-7118D79FC7BD%40gmail.com.

[cobirds] American Golden Plover, Weld Co.

Hello all,


On Saturday afternoon (May 16), there was an American Golden Plover in breeding plumage at the Road 59 wetlands near Kersey, Weld Co. It was in the grass near the pond on the west side of Rd. 59. A Killdeer chased it and it flew away, but did not seem to go far, so it may still be in the area. Distant photos in low light were taken. 


Bob Andrews

Yekepa, Nimba Co., Liberia, West Africa

Currently in Centennial, Arapahoe Co., Colorado