cobirds colorado rare bird: October 2021

Sunday 31 October 2021

[cobirds] Bay-breasted warbler in Estes Park (Larimer)

Glenn Dunmire found a fall plumage Bay-breasted Warbler at Lake Estes in Estes Park (Larimer County) late Saturday afternoon, 30 October 2021. It was at the south side of Lake Estes at the east end of the town park ($5 parking fee) in Russian olives. Today it was refound in the same area and observed off and on throughout the day, often across the street in the pine trees and willow thicket lining the fairground property or moving around the dog park with a flock of 20+ house finches. Frequently found on the ground. Many photos are on eBird. Also in the area 1–2 yellow-rumped warblers and an immature Harris's Sparrow. I recommend parking at the dog park/gun club (no fee) and walking through the pedestrian tunnel to search the lakeside park.

Great find, Glenn.

Nick Komar
Fort Collins CO

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[cobirds] Denver Christmas Bird Count (CBC)

The Denver metro area has a number of Christmas Bird Counts (CBC). ALL CBCs cover habitats within a 15-mile diameter Count Circle. Hugh Kingery mentioned the Denver Urban, and I will plug the original Denver CBC (started in 1954 and run continuously since…except for last year due to COVID).

The Denver CBC will be held on Saturday, December 18. All CBCs can use LOTS of volunteers to help and many people help out on more that one or two. The Denver CBC has habitats ranging from urban, plains and foothill riparian, foothill, canyon, and reservoir. So, much (and varied) habitats that the Count Circle is subdivided into 24 "Count Areas" (see map below) each with a leader and hopefully WONDERFUL volunteers like YOU! Registration can be done through the DFO field trip webpage https://dfobirds.org/ The area numbers on the map below correspond to the field trips on the DFO website.

If you are not available to help on the 18th, PLEASE consider helping on one (or more!) of the many other CBCs being conducted all over Colorado.

Joey.

Joey Kellner

Compiler - Denver CBC

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[cobirds] Denver Urban CBC

We plan to hold the Denver Urban Christmas Bird Count, as uusual, on Jan. 1. You can sign up with the leaders -- I'll post their names and areas closer to the date, or contact me to see which areas merit more birders.

Reserve the date!

Hugh

Friday 29 October 2021

[cobirds] McClain Pit, Douglas

This afternoon Urling and I spent an hour checking bluebird boxes on the Winkler Ranch (inexplicably called "Castlewood Canyon Road, Lake Gulch north" on eBird). We counted two magpies. Period.

Then we went to McClain Pit, on Castlewood Canyon Road; you can see its birds in late afternoon light -- on mid-day, sunny days you can't ID the birds because of the reflected light.

And -- a reward! We watched a juvenile Snow Goose swim by and haul up on shore so that we could see all its field marks. The lake also had about 100 ducks, mostly Lesser Scaup, some Buffleheads and Ring-necked, and two Canvasbacks.

Hugh

[cobirds] Sandhills Cranes over Deer Creek JeffCo

I have about 70 cranes flying south at Cougar Road. High up.

David Suddjian
Littleton Co

Sent from my iPhone

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[cobirds] Cranes over Rabbit Mountain

While on a midday walk on Rabbit Mountain (east of Lyons, Boulder County) and after having run into a birder where we both were looking at three golden eagles, and having lamented that I hadn't seen or heard sandhill cranes this fall headed south, about twenty minutes later I heard the unmistakeable sound of a sandhill crane. It sounded like only one or two, and I never could get them in sight, but from the sound, they came from north-northwest and then headed east. Great birthday present! Maybe it was just a couple of stragglers from a larger flock.

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I acknowledge that I live in the territory of Hinóno'éí (Arapaho), Cheyenne and Ute Nations, according to the 1851 Treaty of Fort Laramie, and that Colorado's Front Range is home to many Native peoples. Reconozco que vivo en el territorio de las naciones Hinóno'éí (Arapaho), Cheyenne y Ute, según el 1851 Tratado de Fort Laramie, y que el estado de Colorado al esté de las Montañas Rocosas es territorio de muchos pueblos indígenas.

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[cobirds] Sandhill Cranes Centennial/Littleton

Hi,

Just about 1:00pm I heard the distinctive calls of Cranes from my backyard. I'm east of S. Broadway near Arapahoe rd.

They were flying south from here. Looked beautiful against the clear blue sky.

Rosanne Juergens

Centennial

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Thursday 28 October 2021

[cobirds] Friends of the PNG Field Trip: Raptor Alley

Hi all

First-of-the-Season Raptor Alley trip: http://www.friendsofthepawneegrassland.org/event/1282/friends-of-the-pawnee-ng-raptor-alley

Thanks, Gary Lefko, Nunn

http://www.friendsofthepawneegrassland.org

https://www.inaturalist.org/projects/birds-and-more-of-the-pawnee-national-grassland

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Wednesday 27 October 2021

[cobirds] Cranes over Littleton

A bit ago I had about 34 Sandhills over my house in Littleton JeffCo. Normally this is not that noteworthy but I still needed them for the Joe Roller Memorial Green big year. I've seen cranes around town but none counted for the green year. I got lucky and caught movement way up high while playing with the boys in the yard (unplanned day off) and managed to get on them. The birds were hauling south with the big north wind. I never heard them. It was about time I got cranes! #268.

I've heard reports of large numbers still being in Montana so I held out hope that I wouldn't miss that one! Cutting it too close but it's been a weird warm fall with minimal north winds.

Good birding!
Scott Somershoe

Sent from my iPhone

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Tuesday 26 October 2021

Re: [cobirds] Re: Brown-headed Nuthatch in western KS

If Brown-headed Nuthatches haven't naturally recolonized Missouri since disappearing 100 years ago, with nearby populations in Arkansas, despite the recent restoration of habitat to "fill in," couldn't it be just as likely for this westward individual to be from Missouri? Ebird maps don't show the species to be particularly dense through most of their range, and apparently sedentary enough and not dense enough to recolonize MO without human assistance. And if these transplants were released in an area that somehow wasn't fit to be naturally recolonized, might there be a chance a relocated bird found it somehow unsuitable still, and wandered westward almost to CO? I'd have to dig out Pulich's "Birds of North Central Texas" to confirm, but I remember something like Dallas County Texas having zero records of BHNU despite them being resident just a stone's throw away in E TX pineywoods, while instead having a record of a vagrant Pygmy Nuthatch that wandered much farther - just an anecdote about how sedentary BHNU seems to be. The BHNU and PYNU sisters sure seem like good indicator species and picky about their forests. Just rambling and musing here, trying to see the world through a nuthatches eyes for a moment.

"Apparently sedentary year-round [BHNU].... Of 49 territorial, color-marked birds in Long Pine Key, Everglades National Park that were present for > 2 years, 36 (73.4%) occupied the same territory every year, for up to 6 consecutive years (G. L. Slater, unpublished data). The remaining 13 (26.6%) switched territories between years, but no individual switched territories more than once during the period of observation (1998-2006; GLS, JDL). Studies of marked birds outside of breeding season lacking and thus details of winter home range remain unclear. Incidental observations of banded individuals on or near breeding territories during the winter suggest year-round residency... Measurable genetic differentiation between nearby breeding populations (separated by <40 km; Haas et al. 2010), tendency of SY males to remain on or near natal territories (Cox and Slater 2007), and failure to recolonize vacant but suitable habitat (e.g., Long Pine Key, Everglades National Park; Lloyd et al. 2009) suggest that movement among populations limited." <https://birdsoftheworld.org/bow/species/bnhnut/cur/demography>

Not venturing a guess on where the KS bird was born really... I have no idea! Scrutinize any wayward Pygmies out on the plains , some sharp eyes and ears will pick one out in CO some day! I bet it'll be in a small town cemetery with a few nice pine trees.

RE the Arctic Tern in Larimer @ Horseshoe - what's the best access point to scan the lake? Congrats to Josh Bruening on finding this awesome bird!

Good birding & Happy Halloween!

Derek Hill

Loveland

derek.jackson.hill@gmail.com

https://www.flickr.com/photos/26102738@N07

On Monday, October 25, 2021 at 7:57:01 PM UTC-6 timothy....@gmail.com wrote:

Hi Cobirders,
Because Dispersal is a function to spread genes and increase diversity, I would expect the source of wandering birds to not be from areas which are newly "colonized".
Missouri's reintroduced birds did breed successfully, and there is abundant habitat to "fill in" within a few miles of the reintroduction location, let alone within a few counties away.

Because of all of the energy saving factors naturally built in to birds, I just can't see the Missouri birds leaving.

In other species like Ruffed Grouse, there are well know factors in which young males up and fly long distances. The "Crazy flight" is a genetic mixing tool to increase diversity in sedentary bird populations and normally occurs from densely populated ones. So think about density as the major factor from where the birds originate. Look for highly concentrated areas, perhaps on eBird maps, and you might find ideas.

Should a bird like that be captured and banded a very small amount of blood or tissue could be analyzed to find the markers indicating the source location. God forbid that it would be collected.

Tim
Birdman Productions
Choteau, MT
BIrdman Adventures
Mokane, MO

On Sunday, October 24, 2021 at 11:48:06 AM UTC-5 davidto...@gmail.com wrote:
I believe it was determined that all the birds reintroduced in Missouri were banded, and this one isn't. But I suppose it could be an offspring to them if those birds successfully bred and the young weren't banded.

David

El dom., 24 de octubre de 2021 10:03 a. m., Dave Cameron <dave...@msn.com> escribió:
Brown-headed Nuthatch was re-introduced last year in the Ozarks in Missouri. Possibly this is a wandering member of that population.

Dave Cameron
Denver

On Friday, October 22, 2021 at 10:03:06 AM UTC-6 Brandon wrote:
Colorado birders should be on the lookout for this species. One is in Garden City, Kansas, only 70 miles from the Colorado border. A few Colorado birders got to see it yesterday morning. Since Pygmy Nuthatches aren't really wandering around this fall, if you see one in eastern Colorado, be sure it isn't a Brown-headed Nuthatch and let us know. Colorado hasn't had this species so far. The bird in Garden City, is the furthest west one to be found ever.

Brandon Percival
Pueblo West, CO

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[cobirds] New Yard Bird/Weld

Hi all

Got a birthday new yard bird, #141 for Nunn yard since 2002, White-throated Sparrow!

Also, scouted Raptor Alley, 26 raptors 0800-1200, on Saturday for upcoming early season trip (probably mid-November):

Red-tailed Hawk - 13
Ferruginous Hawk - 3
Northern Harrier - 2
Bald Eagle - 5
American Kestrel - 1 (usually double-digits)
Golden Eagle - 2
Merlin - 1

Thanks, Gary Lefko, Nunn

http://www.friendsofthepawneegrassland.org

https://www.inaturalist.org/projects/birds-and-more-of-the-pawnee-national-grassland

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Monday 25 October 2021

Re: [cobirds] Re: Arctic Tern, Larimer County

Here are some more photos and audio of this interesting tern at Horseshoe Reservoir (southwest corner), Loveland, from earlier this evening (see link below). The two late afternoons that I have observed this bird, it has flown off at the end of the day toward Lake Loveland, where presumably it is roosting with the gull flock. Both times it was vocalizing as it flew overhead. So it is an opportunity to audio-record it. I believe the audio in the linked eBird checklist supports the ID of Arctic Tern. I might mention that I recorded this audio with the Merlin app (free from Cornell Lab of Ornithology). Merlin did not ID the vocalization. Arctic Tern is not yet in their database. Common Tern is.

Here is the link to the eBird checklist with photos and audio. https://ebird.org/checklist/S96708828.

Nick Komar

Fort Collins CO

On Oct 25, 2021, at 5:11 PM, James Bruening <87211jjb@gmail.com> wrote

All,

Thanks David for getting the word out. I originally found this Tern this past Thursday and based on some blurry photos that I was convinced showed dark secondaries that would have made it a Common Tern not an Arctic Tern. It was certainly short-legged and shorter-billed but thought being a young bird and getting dark outside that I'd stick with that ID until better photos were procured. I finally got convincing (to my birdbrain) photos that show clean, white secondaries that tipped the scales for me on the ID. I believe the dark secondaries I was seeing was nothing more than dark, negative space between the feathers. A lot of field marks go blurry when birds are far away! But big shoutout to Nick Komar who just would not let up on this bird and sent what decent photos he had out to the greater birding minds amongst us to get feedback. The bird has been most often seen on the spit in the southwest corner of the reservoir. Horseshoe Lake is accessible on that southwest corner if you park on 41st Street and cross Monroe. This bird has already been seen by many so hopefully it will stick for a few more days. Moral of the story I guess is that it's ok to report Sterna sp first and get better pics. I will add a bunch of pics but a few of them can be found on this checklist:

https://ebird.org/checklist/S96706316

Bird is the word!

Josh Bruening
Fort Collins

On Monday, October 25, 2021 at 4:46:31 PM UTC-6 davidto...@gmail.com wrote:
Hi all,

I was asked to post here that the bird thus far being reported as a Common Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic Tern. I am not the first to ID it as such, and I believe (correct if wrong) Josh Bruening is the original finder.

Here is a list with pics.
https://ebird.org/checklist/S96693524?view=photos

Best,

David Tonnessen

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[cobirds] Re: Arctic Tern, Larimer County

All,

Thanks David for getting the word out. I originally found this Tern this past Thursday and based on some blurry photos that I was convinced showed dark secondaries that would have made it a Common Tern not an Arctic Tern. It was certainly short-legged and shorter-billed but thought being a young bird and getting dark outside that I'd stick with that ID until better photos were procured. I finally got convincing (to my birdbrain) photos that show clean, white secondaries that tipped the scales for me on the ID. I believe the dark secondaries I was seeing was nothing more than dark, negative space between the feathers. A lot of field marks go blurry when birds are far away! But big shoutout to Nick Komar who just would not let up on this bird and sent what decent photos he had out to the greater birding minds amongst us to get feedback. The bird has been most often seen on the spit in the southwest corner of the reservoir. Horseshoe Lake is accessible on that southwest corner if you park on 41st Street and cross Monroe. This bird has already been seen by many so hopefully it will stick for a few more days. Moral of the story I guess is that it's ok to report Sterna sp first and get better pics. I will add a bunch of pics but a few of them can be found on this checklist:

https://ebird.org/checklist/S96706316

Bird is the word!

Josh Bruening

Fort Collins

On Monday, October 25, 2021 at 4:46:31 PM UTC-6 davidto...@gmail.com wrote:

Hi all,

I was asked to post here that the bird thus far being reported as a Common Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic Tern. I am not the first to ID it as such, and I believe (correct if wrong) Josh Bruening is the original finder.

Here is a list with pics.
https://ebird.org/checklist/S96693524?view=photos

Best,

David Tonnessen

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[cobirds] Arctic Tern, Larimer County

Hi all,

I was asked to post here that the bird thus far being reported as a Common Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic Tern. I am not the first to ID it as such, and I believe (correct if wrong) Josh Bruening is the original finder.

Here is a list with pics.

https://ebird.org/checklist/S96693524?view=photos

Best,

David Tonnessen

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Re: [cobirds] Re: Brown-headed Nuthatch in western KS

Hi Cobirders,

Because Dispersal is a function to spread genes and increase diversity, I would expect the source of wandering birds to not be from areas which are newly "colonized".

Missouri's reintroduced birds did breed successfully, and there is abundant habitat to "fill in" within a few miles of the reintroduction location, let alone within a few counties away.

Because of all of the energy saving factors naturally built in to birds, I just can't see the Missouri birds leaving.

In other species like Ruffed Grouse, there are well know factors in which young males up and fly long distances. The "Crazy flight" is a genetic mixing tool to increase diversity in sedentary bird populations and normally occurs from densely populated ones. So think about density as the major factor from where the birds originate. Look for highly concentrated areas, perhaps on eBird maps, and you might find ideas.

Should a bird like that be captured and banded a very small amount of blood or tissue could be analyzed to find the markers indicating the source location. God forbid that it would be collected.

Tim

Birdman Productions

Choteau, MT

BIrdman Adventures

Mokane, MO

On Sunday, October 24, 2021 at 11:48:06 AM UTC-5 davidto...@gmail.com wrote:

I believe it was determined that all the birds reintroduced in Missouri were banded, and this one isn't. But I suppose it could be an offspring to them if those birds successfully bred and the young weren't banded.

David

El dom., 24 de octubre de 2021 10:03 a. m., Dave Cameron <dave...@msn.com> escribió:
Brown-headed Nuthatch was re-introduced last year in the Ozarks in Missouri. Possibly this is a wandering member of that population.

Dave Cameron
Denver

On Friday, October 22, 2021 at 10:03:06 AM UTC-6 Brandon wrote:
Colorado birders should be on the lookout for this species. One is in Garden City, Kansas, only 70 miles from the Colorado border. A few Colorado birders got to see it yesterday morning. Since Pygmy Nuthatches aren't really wandering around this fall, if you see one in eastern Colorado, be sure it isn't a Brown-headed Nuthatch and let us know. Colorado hasn't had this species so far. The bird in Garden City, is the furthest west one to be found ever.

Brandon Percival
Pueblo West, CO

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Sunday 24 October 2021

Re: [cobirds] Greater White-fronted Goose, Adams County

It appears that this goose may be a better candidate for a Graylag. Apologies if I sent anyone on a wild goose chase.

Thanks,

Jeff Percell

Erie, CO

On Sun, Oct 24, 2021, 3:56 PM Jeff Percell <jeff.percell@gmail.com> wrote:

I spotted a (perhaps FOF-first of fall in Colorado based on eBird) Greater White-fronted Goose this afternoon at Ken Mitchell Park and Open Space in Adams County, alongside Jason Cole. It was on Cell No. 1, the body of water North of the park. It had it's head tucked, resting next to a Canada Goose, and I would have passed it over had it's bright orange legs not stood out so.

Lots of Grebes amongst other usual suspects. Complete checklist here:
https://ebird.org/checklist/S96658794

Good birding,
Jeff Percell
Erie, CO

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Re: [cobirds] late-nesting goldfinches - Boulder Co

I, too, saw a female type Lesser Goldfinch feeding two fledglings regurgitated Maximillian sunflower seed mash on 11October21 at City Park in Fort Collins. It seemed a bit late but as Peter points out, goldfinches are, indeed, the latest songbird nesters of our species that are restricted to warm weather nesting. I have always thought the reason for goldfinches nesting late is their reliance on thistle seed/fluff for nesting material. The timing of when the dominant native and introduced thistle species go to seed determines the timing of goldfinch nesting. Because of some extreme weather events last spring, a lot of plants were late getting started this past spring/summer. The other complications in this attempt to determine what is "normal" is the fact lesser goldfinches have only recently become common breeders in northern CO and also they could be double-brooding more often at present than they did historically. Breeding Bird Atlas I recorded dependent fledglings as late as 25August. BBA II found them as late as October 27. A breeding season extension of two months seems significant even if sampling intensity and other factors make the true story of when fledging last occurs off by a week or two. Thanks, Peter, for your interesting observation.

Dave Leatherman

Fort Collins

From: cobirds@googlegroups.com <cobirds@googlegroups.com> on behalf of Peter Ruprecht <pruprecht@gmail.com>
Sent: Sunday, October 24, 2021 2:06 PM
To: Colorado Birds <cobirds@googlegroups.com>
Subject: [cobirds] late-nesting goldfinches - Boulder Co

Cobirders,

I was part of a small birding party in SE Boulder Co this morning and we were somewhat surprised to see recently fledged Lesser Goldfinches still being fed by their parents. It struck us as unusually late in the season.

I'll note that both species of goldfinches seemed late to start nesting in this area. I personally did not see any nesting behavior until after July 15. Granted, goldfinches are not the earliest species to start breeding ... but to me this seems like one more little example of how songbirds' status is a bit "off" this year.

Peter Ruprecht

Superior

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[cobirds] Greater White-fronted Goose, Adams County

I spotted a (perhaps FOF-first of fall in Colorado based on eBird) Greater White-fronted Goose this afternoon at Ken Mitchell Park and Open Space in Adams County, alongside Jason Cole. It was on Cell No. 1, the body of water North of the park. It had it's head tucked, resting next to a Canada Goose, and I would have passed it over had it's bright orange legs not stood out so.

Lots of Grebes amongst other usual suspects. Complete checklist here:

https://ebird.org/checklist/S96658794

Good birding,

Jeff Percell

Erie, CO

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[cobirds] late-nesting goldfinches - Boulder Co

Cobirders,

Peter Ruprecht

Superior

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[cobirds] Boulder Audubon Meeting This Tuesday!

BCAS Meeting

How Did That Bird Get Here? Meteorological Musings on Migration

Join Boulder County Audubon Society and meteorologist Bryan Guarente this Tuesday, October 26, 2021 to learn about how the wind influences bird migration. You've found or chased vagrant, spring migrants in your many birding days on this planet. Those birds got here on the power of their own wings, fat reserves, hormones, and no doubt with the help of the wind. The relationship birds have with the wind is awe-inspiring. The physiological evolution from this relationship helps birds soar effortlessly while covering significant distances or float just above the water surface. Together with Bryan Guarente, let's take a look at some of those vagrant migrants and see how the weather tells us their intriguing migration story. We'll explore some of the more intriguing migrants over the past year and show you the wind patterns that likely brought them.

Bryan Guarente is a meteorologist and instructional designer who grew up birding with his father in southeast Pennsylvania. Bryan now works at the University Corporation for Atmospheric Research, training meteorologists on all things forecasting both nationally and internationally. He is excited to extend his work to help the birding community understand the relationship between weather and bird migration. Visit our website to learn more!

When: Tuesday, October 26, 2021at 7:15 pm. The Zoom meeting room will open about 7:00 pm.

Where: This meeting will be held online. All participants will be muted upon entry to the meeting room. The chat feature will be on so you can write questions for the speaker. Visit the event page to access the Zoom link!

Note: Please be sure that your Zoom is updated to the latest version before the meeting to ensure you have no issues connecting.

We hope to see you there!

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Re: [cobirds] Re: Brown-headed Nuthatch in western KS

I believe it was determined that all the birds reintroduced in Missouri were banded, and this one isn't. But I suppose it could be an offspring to them if those birds successfully bred and the young weren't banded.

David

El dom., 24 de octubre de 2021 10:03 a. m., Dave Cameron <davednvr7@msn.com> escribió:

Brown-headed Nuthatch was re-introduced last year in the Ozarks in Missouri. Possibly this is a wandering member of that population.

Dave Cameron
Denver

On Friday, October 22, 2021 at 10:03:06 AM UTC-6 Brandon wrote:
Colorado birders should be on the lookout for this species. One is in Garden City, Kansas, only 70 miles from the Colorado border. A few Colorado birders got to see it yesterday morning. Since Pygmy Nuthatches aren't really wandering around this fall, if you see one in eastern Colorado, be sure it isn't a Brown-headed Nuthatch and let us know. Colorado hasn't had this species so far. The bird in Garden City, is the furthest west one to be found ever.

Brandon Percival
Pueblo West, CO

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[cobirds] Re: Brown-headed Nuthatch in western KS

Brown-headed Nuthatch was re-introduced last year in the Ozarks in Missouri. Possibly this is a wandering member of that population.

Dave Cameron

Denver

On Friday, October 22, 2021 at 10:03:06 AM UTC-6 Brandon wrote:

Colorado birders should be on the lookout for this species. One is in Garden City, Kansas, only 70 miles from the Colorado border. A few Colorado birders got to see it yesterday morning. Since Pygmy Nuthatches aren't really wandering around this fall, if you see one in eastern Colorado, be sure it isn't a Brown-headed Nuthatch and let us know. Colorado hasn't had this species so far. The bird in Garden City, is the furthest west one to be found ever.

Brandon Percival
Pueblo West, CO

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Saturday 23 October 2021

[cobirds] Bird Conservancy of the Rockies - Barr Lake Banding Report, 10-23-21

We started off our last morning with a flock of a dozen birds, mostly Juncos, which made a nice presentation for our final student group of the season, the Advanced Field Ecology Lab from Regis University. Then things slowed down to the normal 2021 season pace and we ended the day with 18 new birds (listed below) and 9 recaps (mostly White-crowned Sparrows that are likely sticking around for the winter):

Hermit Thrush 2

Yellow-rumped Warbler 1 Myrtle, 2 Audubon's, 2 unidentified

Song Sparrow 3

Lincoln's Sparrow 1

White-crowned Sparrow, Gambel's 1

Dark-eyed Junco 2 Slate-colored, 4 Oregon

It is a big undertaking to run this station, and I want to thank the great team of volunteers who make this work possible. It was sad, as always, to take the station down today, but I look forward to some time to analyze the data and see what we learned from this season.

Thanks to all who visited, who read and commented on our posts, and see you in the spring at Chatfield!

Meredith McBurney

Bird Conservancy of the Rockies

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Friday 22 October 2021

[cobirds] Banding notes and Musings, Clear Spring Ranch, El Paso Co, Friday

Hey COBirders,

I'm not done yet!

Tagging on to Meredith's report yesterday from Barr Lake banding - my results have been pretty similar for the last week - frosted nets, and most days single-digit birds with a few recaps from previous days, and maybe a return from previous falls. My best day was yesterday, with 11 birds.

Today things got officially weird. No frost, a 40o temperature swing before 11 a.m., and 23 new birds today. (why now???), with an unusual overlap.

Like Meredith - I had my FOS Am Tree Sparrow, (my earliest ever), but also two lost Wilson's Warblers, my first in three weeks, and very much unexpected this late in October, a late Gray Catbird, and my 1600th Chipping Sparrow for this fall!

Numbers for most species are down from the last several falls. Looking over my charts from the last 10 years, there is a real pattern, at least for sparrow numbers here. - I have had big numbers of sparrows of multiple species in EVEN years, and much lower numbers in ODD years, like a five-fold difference for some. (except for Chipping Sparrows - last year 1900, this year 1600. I'm thinking CSR should be short for "Chipping Sparrow Ranch")). But Lincoln's Sparrow - 2002- 257, 2021- 25. Song Sparrows - my lowest total in 10 years - only 32 (94 in 2020). White-crowned Sparrows - 2020- 165, 2021- 62.

With two more Ruby-crowned Kinglets today I am up to 12, after three consecutive years of over 50.

On the other hand, I've had my highest totals ever for Gray Catbird, Spotted Towhee, and Yellow-breasted Chat. I wondered early-on about how much these numbers reflected the horrible die-off we had early last September, but now I wonder it it is just the extreme drought in the West.

Every year is different, and I'll continue to collect data, but I doubt that I'll figure it all out.

It looks like weather may cooperate so that I can continue banding until my target - 10/31. I haven't made it that late yet in 10 years. Last year, after HUGE numbers (4500 total birds, 1900 CHSP), I was frozen out the last week of October with some highs only around 12o. 35o, like today, doesn't seem so bad!

Have a birdy weekend,

Steve Brown

Colo Spgs

[cobirds] 293 pelicans on Windsor Reservoir. Weld County

Most are newly arrived today. Currently at SE end of reservoir.

Joan Glabach
Severance, CO

Sent from my iPad

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[cobirds] Bird Conservancy of the Rockies - Barr Lake Banding Report, 10-22-21

Today we had nearly a 40 degree temperature swing from opening to closing, going from layers of jackets down to t-shirts by the end. If you noticed my intro began with weather and clothing observations you'd be right to assume we had a slower day with regard to the birds; 3 newly banded and 8 recaptures from earlier this season. Here they are:

Black-capped Chickadee - 1 recap

Ruby-crowned Kinglet - 1 recap

White-breasted Nuthatch - 1 recap

Oregon Junco - 1 new, 1 recap

White-throated Sparrow - 1 new

Mountain White-crowned Sparrow - 1 new

Gambel's White-crowned Sparrow - 3 recap

Song Sparrow - 1 recap

Tomorrow is the final day of the season (we will take the station down at the end of banding). Click here to register to visit - we are offering one-hour slots (up to 12 visitors at a time); 9-10 and 10-11 tomorrow. Come visit us on the final day!

Colin Woolley

Bird Conservancy of the Rockies

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[cobirds] Brown-headed Nuthatch in western KS

Colorado birders should be on the lookout for this species. One is in Garden City, Kansas, only 70 miles from the Colorado border. A few Colorado birders got to see it yesterday morning. Since Pygmy Nuthatches aren't really wandering around this fall, if you see one in eastern Colorado, be sure it isn't a Brown-headed Nuthatch and let us know. Colorado hasn't had this species so far. The bird in Garden City, is the furthest west one to be found ever.

Brandon Percival
Pueblo West, CO

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Thursday 21 October 2021

[cobirds] Re: juv yellow rail or juv sora? Larimer

sorry I mixed up yellow and virginia rail in terms of being possible in CO... obviously must have been a sora

On Thursday, October 21, 2021 at 7:58:07 PM UTC-6 ronbco wrote:

I'm torn on an id.
In a ditch at Lon Hagler res.
I got great looks but not a great pic. Did not know what field marks to focus on to distinguish sora from yellow rail.

I happened to be still/quiet listening for another bird when it stepped out just at the edge of the ditch foliage and foraged partly under cover.
overall brown/grey/black. Legs green,
bill had green tinge (no yellow) and no black mask, streaked back pattern - suggesting rail
but tail turned up showing some white suggesting sora
From ebird it looks like yellow rail is a little more likely this time of year.

Ron Bolton
Berthoud

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[cobirds] juv yellow rail or juv sora? Larimer

I'm torn on an id.

In a ditch at Lon Hagler res.

I got great looks but not a great pic. Did not know what field marks to focus on to distinguish sora from yellow rail.

I happened to be still/quiet listening for another bird when it stepped out just at the edge of the ditch foliage and foraged partly under cover.

overall brown/grey/black. Legs green,

bill had green tinge (no yellow) and no black mask, streaked back pattern - suggesting rail

but tail turned up showing some white suggesting sora

From ebird it looks like yellow rail is a little more likely this time of year.

Ron Bolton

Berthoud

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Re: [cobirds] Colorado Bird(er) elsewhere and a Red-naped Sapsucker (Boulder Co.)

hi Tom,

The links here might help you find a place where you can schedule your 3rd jab: https://www.kunc.org/2021-09-30/heres-how-to-get-a-covid-19-vaccine-booster-shot-in-fort-collins-loveland-or-greeley

Here's how to get a COVID-19 vaccine booster shot in Fort Collins, Loveland or Greeley | KUNC

Cassie Sanchez (right) prepares a dose of COVID-19 vaccine alongside other pharmacy staff during a mass vaccination clinic at Sunrise Community Health earlier this year. Last week, the Centers for Disease Control and Prevention gave the green light to COVID-19 vaccine booster shots for certain ...

www.kunc.org

From: cobirds@googlegroups.com <cobirds@googlegroups.com> on behalf of jay...@gmail.com <jay1125@gmail.com>
Sent: Thursday, October 21, 2021 4:32 PM
To: Colorado Birds <cobirds@googlegroups.com>
Subject: [cobirds] Colorado Bird(er) elsewhere and a Red-naped Sapsucker (Boulder Co.)

Not wanting to run afoul (no pun intended) of our group rules, where can one go to seek info when birding, say for example, in London in January?

A legit question in general, as many of us travel and knowing where to find the local equivalent of a COBIRDS group would be extremely helpful.

Please direct message me at jay1125@gmail.com if you have some suggestions.

And to keep it honest, we had a Ren-naped Sapsucker in the yard for two days last week in NE Longmont, a first for the yard. Photos: https://ebird.org/checklist/S96301973

Jay Hutchins

Longmont (Boulder)

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