[cobirds] More migrants Westminster, Broomfield, Boulder, etc.

All:

        A late list of more stuff coming in through Boulder, Broomfield, Westminster, from over the last 9 days.  Here's a photo of a Western Bluebird from NCAR from 5 days ago:  

American White Pelican - most of the larger flocks have dispersed from Front Range area.  

Pied Billed Grebe - are back in many locations

Western Grebe - at Stearns Lake

Double Crested Cormorant - spread over large areas, numbers still increasing

Black Crowned Night Heron - 1 along Platte River near Adams County Fairgrounds (note:  Adams County Fairgrounds is torn to pieces with heavy construction going on - best to park on Henderson Road at the Veterans War Memorial). 

Great Blue Heron - young on nests already, being fed by parents

Snowy Egret - numbers are increasing, but not as many as last year. 

White Ibis - came and went in Arvada, - hope you got to see it. 

Canada Goose - some with goslings already

Cackling Goose - a few strays at East Lake in Thornton

Mallard - present 

Gadwall - still hanging at several lakes and ponds

Green Winged Teal - most are gone but a few on the Platte River, Adams County

Blue Winged Teal - East Lake, Thornton

Northern Shoveler - East Lake, Thornton, a few

Redhead - a few were still at East Lake (Thornton) and Plaster Reservoir (Broomfield)

Ring Necked Duck - still a few at Plaster Reservoir, Broomfield

Lesser Scaup - Brunner Reservoir, Broomfield

Ruddy Duck - at Brunner Reservoir - 3 females

Turkey Vulture - numbers increasing

Osprey - two flyovers at NCAR, and others along Front Range

Northern Harrier - NCAR, Boulder

Golden Eagle - Louisville along Dillion Road

Bald Eagle - all monitored nest sites appear to have young (note:  road going into the bald eagle's nest near Stearns Lake is completely closed to the public - includes walking or driving).  

Cooper's Hawk - throughout suburban, and open space areas - murdering birds left and right. 

Sharp Shined Hawk - a few seen

Red Tailed Hawks - on nests in Westminster, Broomfield, Boulder, Thornton, etc. etc. 

Swainson's Hawks - numbers increasing - most seen in Broomfield and Westminster

American Kestrel - present

Wild Turkey - lots at East Lake #2 in Thornton - local people told me that they are being fed by several households (not good!). 

Virginia Rail - Plaster Reservoir and East Lake

American Coot - East Lake and Plaster Reservoir

Black Bellied Plover - fair looks at Baseline Reservoir - a scope is needed

Piping Plover - at Baseline Reservoir - (a thanks to Peter Gent)

Killdeer - present in many locations

American Avocet - scattered along lakes and ponds - large flocks moved through about 2 weeks ago.  

Lesser Yellowlegs - Stearns Lake, and Baseline Reservoir

Greater Yellowlegs - Stearns Lake 

Spotted Sandpiper - Stearns Lake

Least Sandpiper - 4 at Stearns Lake 5 days ago (note:  Water levels have risen at Stearns covering the shorebird habitat.  Water levels from one day to the next change depending on how much water is being let out.)

Long Billed Dowitcher - 18 or 19 at Stearns Lake 5 days ago, but all gone now.  I was not able to ID short billed dowitcher. 

Franklin's Gull - about 100+ resting on sandbars and islands about 6 days ago at Baseline Reservoir. 

Ring Billed Gull - still a few hanging on at lakes and ponds

Rock Dove - present

Eurasian Collared Dove - present

Mourning Dove - present

Great Horned Owl - most young are off nests now

Northern Pygmy Owl - heard along Bear Creek Trail in Boulder, below NCAR

Broad Tailed Hummingbird - throughout numerous neighborhoods, males already doing display flights. 

Black Chinned Hummingbird - Longmont, Broomfield

Belted Kingfisher - present 

Acorn Woodpecker - finally went to see it; still present in Longmont

Northern Flicker - everywhere.  Saw and photo'd several hybrid mixes 

Downy Woodpecker - present

Eastern Phoebe - two seen and heard:  one in Louisville at Coal Creek Lane and West Cherry St.  Another one at Golden Ponds area where bike path goes under Hover Road. 

Say's Phoebe - many locations; nesting

Western Kingbird - numbers increasing; Broomfield, Westminster, Thornton

Loggerhead Shrike - Stearns Lake - 1

Yellow Throated Vireo - heard only, at west Wanaka Lake area near the marsh and wood deck. Possible Cassin's Vireo in the area also.  

Blue Jay - present

Stellar's Jay - present - gathering nesting materials

Black Billed Magpie - present - many have young in nests 

American Crow - present

Common Raven - Boulder, Broomfield

Horned Lark - heard at Stearns Lake

American Tree Swallow - a few at East Lake, Thornton - 7 days ago

Violet-Green Swallow - at Gregory Canyon, Boulder, and along Boulder Creek

Northern Rough Winged Swallow - Westminster, Boulder

Cliff Swallow - massed flocks already building nests - Westminster, Broomfield, Boulder, Longmont

Barn Swallow - just about everywhere

Bush Tit - present; gathering insects, and nesting materials

Black Capped Chickadee - numbers seem way down from last year

White Breasted Nuthatch - nest sites; males feeding females

Red Breasted Nuthatch - some still down low in Broomfield and Westminster

Pygmy Nuthatch - at NCAR

House Wren - came in within the last few weeks; some areas have lots; other areas seem depleted. 

Marsh Wren - 1 at Stearns Lake

American Dipper - two nest sites in Boulder along the Boulder Creek Bike Path.  Feeding young in nests under bridges. 

Blue Gray Gnatcatcher - Westminster, Boulder, Longmont

Western Bluebird - NCAR

American Robin - everywhere on nests 

European Starling - present - hundreds of nest sites

Orange Crowned Warbler - one along Boulder Creek, about 6 at Wanaka Lake this morning

Audubon's Warbler - spread out over many areas; high concentration along Boulder Creek near the "Confluence" park area behind CU Research Center

Myrtle Warbler - same as above

Black Throated Gray Warbler - one male at Wanaka Lake - singing, visible

Yellow Warbler - one along Boulder Creek

Common Yellowthroat - Broomfield at Brunner Reservoir and Plaster Reservoir

Spotted Towhee - in good numbers this year; Boulder, Broomfield, Westminster

Chipping Sparrow - hundreds coming through in large flocks - Boulder, Broomfield

Song Sparrow - present

White Crowned Sparrow - still present at lower elevations in Boulder, Broomfield, Westminster, and Thornton

Dark Eyed Junco - a few still in Broomfield

Western Meadowlark - numbers way down from last year;  singing

Red Winged Blackbird - present

Yellow Headed Blackbird - at East Lake in Thornton

Common Grackle - everywhere.  They've taken over the world!  

Great Tailed Grackle - at Teller Lake #5 in Boulder 

Brown Headed Cowbird - present, numbers increasing

Brewer's Blackbird - Thornton, Westminster, Broomfield

House Finch - Present.  

American Goldfinch - in large numbers this year. 

House Sparrow - present

.... And a few others I probably missed.  Please excuse spelling and grammatical errors. 

Happy spring birding, 

John T (Tumasonis)

"I'm not a real birder.  I only pretend to be one on CoBirds."  

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[cobirds] Dinosaur Ridge - Denver Field Ornithologists (07 May 2026) 16 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: May 07, 2026
Species	Day's Count	Month Total	Season Total
Black Vulture	0	0	0
Turkey Vulture	0	13	175
Osprey	0	3	67
Bald Eagle	0	1	28
Northern Harrier	0	1	51
Sharp-shinned Hawk	7	12	207
Cooper's Hawk	4	19	268
American Goshawk	0	0	2
Red-shouldered Hawk	0	0	0
Broad-winged Hawk	1	17	97
Red-tailed Hawk	1	13	475
Rough-legged Hawk	0	0	0
Swainson's Hawk	1	2	54
Ferruginous Hawk	0	0	17
Golden Eagle	0	0	8
American Kestrel	2	10	706
Merlin	0	0	7
Peregrine Falcon	0	0	10
Prairie Falcon	0	0	4
Mississippi Kite	0	0	0
Unknown Accipitrine	0	0	22
Unknown Buteo	0	0	5
Unknown Falcon	0	0	5
Unknown Eagle	0	0	0
Unknown Raptor	0	1	6
Zone-tailed Hawk	0	1	1
Total:	16	93	2215

Observation start time:	09:00:00
Observation end time:	17:00:00
Total observation time:	8 hours
Official Counter	Soren Zappia
Observers:	Laura Farnsworth

Visitors:
3 visitors. It was a surprisingly quiet day for visitors, but a few stopped by and asked about how the season was going. Thank you to Ryan Gannon for volunteering today!

Weather:
It started as a cool and cloudy day, and the remainder of yesterday's snow disappeared as the day passed. Temperatures were in the 50s to high 60s F. The wind was initially gusting from the west, at a sustained speed of 3 bft with gusts of 4-5 bft, but after about a half hour the wind died down and was light and variable for the remainder of the day. Cloud cover was extensive, but thickness varied at points during the afternoon allowing the sun to shine through intermittently.

Raptor Observations:
It was a good day for some late accipitrine movement, especially of juvenile Sharp-shinned Hawks. Birds were generally on a low overhead line or just off the side of the ridge with very few birds, local or migrant, observed on the west ridges or Green Mountain. In the early afternoon, an adult Broad-winged Hawk passed overhead, and later we saw a juvenile Swainson's hawk take the same line. Both Cooper's Hawks and Sharp-shinned Hawks flew past low at various points, and a few were below eye level. Local activity was surprisingly quiet with the local TVs and RTs making a few rare appearances. Mountain Bluebirds and few Western Bluebirds were observed flying west back to the mountains after yesterday's snow. A male Lazuli Bunting, the first seen at the ridge this year, was singing from a snag.

Non-raptor Observations:
White-throated Swift 59, Broad-tailed Hummingbird 1, Mourning Dove 1, Double-crested Cormorant 1, American White Pelican 25, Northern Flicker 1, Say's Phoebe 1, Blue Jay 1, Woodhouse's Scrub Jay 1, Magpie 1, Black-billed Magpie 2, Common Raven 2, Tree Swallow 3, Violet-green Swallow 146, Barn Swallow 2, swalow sp. 3, American Bushtit 2, Rock Wren 1, Mountain Bluebird 13, Western Bluebird 4, American Robin 1, House Finch 1, Pine Siskin 2, Chipping Sparrow 3, Spotted Towhee 2, Western Meadowlark 1, Yellow-rumped Warbler 2, Yellow-rumped Warbler (Audubon's) 4, Lazuli Bunting 1

Predictions:
Tomorrow, we expect sun and temperatures in the mid 50s-mid 60s F and winds from the E and ENE. A few clouds may be present in the afternoon. The trail was a bit muddy today and may be tomorrow as well.

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Report submitted by Official Counter of the day shown above (dinoridgehw@gmail.com)
Dinosaur Ridge - Denver Field Ornithologists information may be found at: www.dinosaurridgehawkwatch.org
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]
Count data submitted via Trektellen.org - [Project Details]

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Site Description
Dinosaur Ridge is the only regularly staffed hawk watch in Colorado and is the
best place in the world to see migrating Ferruginous Hawks. Hawk watchers may
see 17 species of migrating raptors; and it is an excellent site to see rare
dark morph buteos including Broad-winged hawk, Swainson's hawk, Ferruginous
hawk, Rough-legged hawk and Red-tailed Hawk. Other raptors we see include Golden
and Bald Eagles, Northern harrier, Osprey, Peregrine Falcons, Prairie Falcons,
Cooper's and Sharp-shinned Hawks, American Kestrels, Merlin, and Turkey
Vultures. American Goshawk is uncommon but also counted each season. Non-raptor
species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane,
White-throated Swift, and American White Pelican. Birders of any skill level are
always welcome. The hawk watch at Dinosaur Ridge is staffed by Hawk Counter(s)
and volunteers from March through early May.

Directions to site:
From exit 259 on I-70 towards Morrison, drive south under freeway and take left
into first parking lot, the Stegosaurus lot. Follow hawk watch signs from the
southwest end of the parking lot to the hawk watch site. The hike starts heading
east on an old two-track and quickly turns south onto a trail on the west side
of the ridge. When the trail nears the top of the ridge, turn left, and walk to
the flat area at the crest of the ridge. (Distance: 0.56 miles, Elevation gain:
259 feet)

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[cobirds] N Waterthrush, CSR, Thursday

Hey, COBirder,

A little slow this morning at Clear Spring Ranch banding after the hard freeze. I opened later, but there were still few birds moving until after 930.

Highlights were FOS N Waterthrush, FOS Blue Grosbeak male, several Myrtle Yellow-rumped Warblers high in the canopy, and a few Orange-crowned Warblers, Com Yellowthroats, and Yellow Warbler (banded/returning) males. 23 birds caught this morning. Also a Prairie Falcon cruised by.

Happy Migration,

Steve Brown

Colo Spgs

[cobirds] Chico Basin Ranch Banding Station Report- May 7, 2026-Bird Conservancy of the Rockies

The Ranch received some much needed precipitation yesterday. None as great as farther north but the birds were out looking for insects and seeds all day yesterday. 

Today we opened the nets later due to the temps. Birds were very active once it warmed up. It was good to see that those we caught/banded were in good condition. The Least Flycatcher was the lowest fat condition. I am sure it had the toughest time yesterday finding food. Glad the temps are nice today to let the birds feed and prepare for migration. 

Eighteen bird species captured/banded including 6 warblers (if separate the subspecies) and 5 sparrows. Harris's Sparrow and Canyon Towhee were a highlight for me. 

46 New Banded Birds

Audubon's (Yellow-rumped) Warbler- 1

Myrtle (Yellow-rumped) Warbler- 4

Common Yellowthroat- 1

Wilson's Warbler- 3

Yellow Warbler- 2

Orange-crowned Warbler- 1

Northern House Wren- 2

Least Flycatcher- 1

White-throated Sparrow- 1

Mountain White-crowned Sparrow- 4

Gambel's White-crowned Sparrow- 13

Harris's Sparrow- 2

Chipping Sparrow- 2

Spotted Towhee- 1

Canyon Towhee- 1

Swainson's Thrush- 6

Gray Catbird- 1

3 Recaptures- all gained weight/fat since original banding date

Common Yellowthroat

Myrtle (Yellow-rumped) Warbler- first banded on May 1st- doing great

Gamble's White-crowned Sparrow

American Robin male nesting in banding station area is a returning bird that is at least 7 years old.It was banded as an adult.

The banding station will be open tomorrow through Saturday from sunrise until @11 AM. Stop by the banding station and share your sightings. We would love to hear what you have seen.

Remember to register on Aiken Audubon website if wanting to bird the ranch. www.aikenaudubon.com

Have a good day,

Julie Shieldcastle

Chico Basin Ranch, Bander

Bird Conservancy of the Rockies

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[cobirds] Chatfield Banding Station, Bird Conservancy of the Rockies 5-7-26

The storm that kept us from banding the past 2 days brought the Yellow-rumped Warblers down and the Hermit Thrushes in.  We also caught our first Yellow Warbler today, which is pretty much our station bird.  So, very much worth the hour we spent getting the nets off the ground and resetting almost all of the poles!

Here's the break-down of today's 35 new and 1 return:

Northern House Wren 2 new, 1 banded 2024
Hermit Thrush 9 (We have been worried about this species at Chatfield.  Average HETH captures from 2008-19 was 15; since then we have caught 0 - 4 per year.  With the 2 caught earlier this season we are up to 11, which makes us happy!)
Yellow Warbler 1
Yellow-rumped Warbler, Myrtle 10
Yellow-rumped Warbler, Audubon's 11
Common Yellowthroat 2

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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Re: [cobirds] EBird Glitch?

Thanks all!

On Thursday, May 7, 2026 at 11:17:58 AM UTC-6 Sabrina Hepburn wrote:

Hi Suzanne,

Not a glitch and you didn’t miss it! I believe this is just part of the new community hotspots/hotspot groups feature that was only just rolled out. You can read about it here:

Community-sourced Hotspot Descriptions and Hotspot Groups are Here ebird.org

Others may be able to jump in and explain more, but understanding is this doesn’t affect the underlying data at all. It only provides a different way of viewing summary information across hotspots that are considered a connected location. So a birder planning their trip to single wildlife refuge doesn’t have to separately look for lists at each included pond, etc, to see what was observed there in general.

Sabrina Hepburn

Arvada, CO

On May 7, 2026, at 11:03 AM, Suzanne S <birdm...@gmail.com> wrote:

Hi all!

New to the group but not new to birding and have been an EBird contributor for several years now.

So I post my lists in the specific Chico Basin Ranch - Wooded Areas hotspot, but now I also see the same lists cross-post in the "general" Chico Basin Ranch - (El Paso Co.) hotspot too.   Isn't that "doubling up?"  Same thing happens when I post to the HQ location specifically, too.  It cross-posts to the Pueblo Co. hotspot as well.

Is there a glitch in Ebird?  Or have I just never noticed this all these years?

Suzanne Schwartze

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[cobirds] Check in

              H there,
Quick question, do you order from amazon.?

John