Sunday 31 December 2023

[cobirds] BRAMBLING, Colorado Springs, El Paso County

Hi CO birders,

On December 27th, David Resch photographed a Brambling in a Colorado Springs suburb, and submitted it to eBird on December 29th. Thanks to Mark Peterson for calling me and alerting me to this, I then went out to give the neighborhood a check the following morning, fully not expecting to find anything. However, at 9:32 I lucked into the bird feeding on berries with a flock of juncos and House Finches at 38.907514,-104.858815 in a red berried ornamental; then followed it as it flew to 38.908563,-104.859306 in cottonwoods and below some feeders, still associating strongly with junco flocks. I was viewing the bird from Pinon Valley Rd throughout. At approx. 9:47 am I lost track of the bird while chatting with a dog-walker. But my guess is it kept going north to visit another yard with a good food source in the area. There are several houses with feeder setups in the neighborhood, currently.

This morning, 4 of us looked in the same spots without luck. David Resch has also not seen the bird since photographing it on the 27th.

Thus far, homeowners have been friendly. But if you find this bird, and pin down a spot where it seems to be potentially reliable, please make sure with the homeowners who reside there that alerting birders to the location would be ok. 

If you look for this bird, I recommend parking at the US Post Office at 5001 Centennial Blvd, Colorado Springs, CO 80919, or at the plaza across the street from there, and walking up Pinon Valley Rd towards the Brambling area. While there is some street parking along these roads, please be careful not to crowd the streets where locals reside.

People will be curious, and be prepared to be stopped and questioned about what you are doing if you have large optics visible. Enthusiasm on the subject of birding and explaining the rarity of the target bird while showing them pictures (I like to use Merlin) always helps. Be respectful and courteous, and do not walk onto lawns or yards unless explicitly given permission.

To me, this individual looked like a male in basic plumage. Very bright for a winter Brambling, and it's dazzling orange is what caught me eye initially, along with its size (slightly larger than a junco or House Finch). This species does not typically fly to the very tops of trees, unlike many of the local finch species, but stays at mid-level or just below the crown. They feed on the ground more than other finch species, too


Good luck, and Happy New Year's Eve!

~ David Tonnessen 

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[cobirds] CAPE MAY WARBLER still present

Seem in trees on both sides of Clear Creek near parking lot, east of I-70
Joey.

Joey Kellner
Littleton, Colorado
    _
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Saturday 30 December 2023

[cobirds] Cape May Warbler at Clear Creek trail

We were looking for the Black Phoebe and John Chanin has a photo of a Cape May. It is just north of the parking lot along the creek.

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Thursday 28 December 2023

[cobirds] Last two weeks of June

Cobirders,

If you were going to head either east or west in the last two weeks of June, which direction would you go to bird:  Western Slope or Eastern Plains?

I know it will probably be hot in either area, but that is the best time I have to be away from the mountatins.

So:  NW Corner of the state, Roan Plateau, Grand Mesa, Umcompaghre Plateau, Mesa Verde, Pagosa Springs?

Or:  Trinidad, La Junta, Lamar Limon, Wray, Sterling, Pawnee Buttes, Greeley?

I'll be headed to the mountains in July/August; I'm really interested in the other two major areas of the state.

Thoughts? Votes?

Thanks,

Gary Brower
Unincorporated Arapahoe County

[cobirds] Flagler CBC set for Saturday Dec 30

Still need a longspur for your year list?  Join us on the Flagler CBC on December 30. Due to a last minute cancellation, we are one surveyor short.

We meet at the I-70 Diner in Flagler at 8AM to assign territories.  New participants are always welcome and will be assigned to a territory with an experienced guide. Please contact the compiler, Doug Kibbe at dpkibbe@msn.com, ahead of time if you plan to attend.

Happy Holidays

Doug Kibbe   Compiler

303-910-9476


[cobirds] Christmas Bird Counts tomorrow (29 Dec 2023)

There's two Christmas Bird Counts tomorrow in southern Pueblo County and in Huerfano County.  If you want to come and help these counts that don't have a lot of observers usually.  Here are the details.

Lake Isabel CBC:
Meet at 8am at the dam at Lake Beckwith in Colorado City in Pueblo County, to help with the southern half of the circle (Colorado City, Rye, and San Isabel areas).  If you have bird feeders and want to be a feeder watcher, that is also possible.

Spanish Peaks CBC:
Meet at 8am at the La Veta Town Park, in La Veta, Huerfano County.   This circle includes La Veta and Cuchara.

Brandon Percival
Pueblo West, CO

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Wednesday 27 December 2023

[cobirds] Fort Collins CBC

I should have posted this last week.  The Fort Collins CBC in Larimer County was completed December 16, 2023.  What a day – warm. sunny, and still with lots of open water this year.  It was amazing the number of people that thought the count seemed quiet, but biodiversity was up.  It did seem relatively quiet, but geese were not flying around that day like normal and crows were low in number.  We had an unbelievable count.  This was the 77th count, being conducted continuously since 1947.  A note of interest, only 10 species have been seen every year since the inception of the count, which actually surprised me*: (Mallard, Northern Harrier*, Northern Flicker, Black-billed Magpie, Black-capped Chickadee, House Sparrow, House Finch, American Tree Sparrow*, Song Sparrow, and Western Meadowlark*. I was equally surprised that Downy Woodpecker, European Starlings, and Red-winged Blackbirds did not make it (each missing one year), especially common snow or shine in Fort Collins.

 

We had a record number of species on the count – 111.  Our previous high was 103.  We crushed the old record without a new species being seen for the count. Additionally, we had 3 count week species. We did see all the usual species (55 for the last 20 years) but had several rarities including White-winged Scoter (2), Long-tailed Duck (2), Barrow's Goldeneye (6), Iceland (Thayer's) Gull (1), Lesser Black-backed Gull (1), Say's Phoebe (1), Pacific Wren (1), Winter Wren (1), Western Bluebird (1), and Lincoln's Sparrow (3). We saw a lot of other birds that are not seen every year but occasionally.  


High counts were tallied for Ross's Goose (17 vs 16), Bufflehead (28 vs 21), Barrow's Goldeneye (6 vs 2), Hooded Merganser (63 vs 41), Wild Turkey (303 vs 154), Ring-billed Gull (953 vs 678), Long-eared Owl (7 vs 4), White-crowned Sparrow (659 vs 613), and Lincoln's Sparrow (3 vs 2). Some species had much lower numbers than we are accustomed seeing including Norther Shoveler (3 vs the last 5 average), Eurasian Collared-Dove (484 vs 927), American Crow (154 vs 414), and American Robin (447 vs 2,021).  Ring-necked Pheasants have all but disappeared over the last 5 years and no indication they will be back. A note on the Eurasian Collared-Dove: first seen in 2002, rising to a high of 3,177 in 2012, and slowly declining since.  I believe that the "honeymoon-phase" is over for them with disease, lack of resources, and nesting success possibly catching up to them.

 

As far as participants, we had 106 people in the field and 17 participating as feeder watchers. The number of people participating has increase yearly to these record numbers.  It is great to see younger participants as the popularity of birding seems to rise. I must say that cancellations were high this year, but even so, record numbers of people showed up.  However, record numbers of people did not necessarily equate to more effort – just shorter days for some in the field.   


Happy 2024

Tom Hall

Fort Collins

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[cobirds] Long-tailed Duck at Dillion Reservoir

Earlier this mourning I found a Long-tailed Duck along an overlook. The reservoir is still around 40% open. According to ebird it's the 6th county record, there hasn't been one in 6 years and it's the latest. 

-Archer🦜


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Monday 25 December 2023

[cobirds] Christmas crossbills, Boulder Co.

Merry Christmas, everybody! Hannah Floyd and I were in the Flatirons, Boulder Co., at sunrise this frigid but brilliant Mon., Dec. 25, 2023, and we saw this guy:



Here's our eBird checklist:

https://ebird.org/checklist/S157098823

Ted Floyd
Lafayette, Boulder Co.


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Re: [cobirds] Digest for cobirds@googlegroups.com - 4 updates in 4 topics

Spotted a yellow-throated warbler at a backyard feeder near North Palo Park, Boulder. 3 experienced birders saw the bird clearly with binoculars but didn't get a photo.

On Tue, Dec 19, 2023, 1:20 AM <cobirds@googlegroups.com> wrote:
"aiant...@gmail.com" <aiantony521@gmail.com>: Dec 18 08:06PM -0800

December Winter Raptor Survey of Rocky Mountain Arsenal NWR and DIA Raptor
Alley, with sighting of a mystery buteo
 
This is our 2nd season doing volunteer Winter Raptor Surveys (WRS) for the
Hawk Migration Association of North America (HMANA) since moving to Denver
in July 2022. Prior to moving we did 4 WRS in New York State in the Hudson
Valley area since 2016.
 
Last winter season we did 3 surveys here – 1 in Denver and 2 in Boulder in
December 2022, and January and February 2023 for each route, following it
exactly, and roughly in the same week each month.
 
This year we added another WRS in the area between Bennett and Jackson Lake
SP. We did that route a week ago with nothing special to report. It may
improve as winter progresses.
 
Yesterday we completed the Rocky Mountain Arsenal to Barr Lake, and west of
Denver International Airport route for December 2023.
 
We saw and identified 78 Raptors, including
 
Ferruginous Hawk 5, all adult
 
Prairie Falcon 1, which attacked a Red-tailed Hawk as well
as a Northern Harrier
 
Bald Eagle 25
 
Northern Harrier 10
 
American Kestrel 5
 
Red-tailed Hawk 25, including 2 dark morph RT on Piccadilly Road
at Barr Lake, one perched and both in flight together. Spectacular.
 
In addition we had a mystery buteo at 1st Creek at DEN Open Space perched
in a tree next to Peña Boulevard at 10:15 AM. When we finished our survey
and on the way back we could still see it (presumably the same buteo) at
the same location at 4:30 PM while driving south on Peña Boulevard.
 
Our eBird checklist for that location with images is:
 
https://ebird.org/checklist/S156663182
 
My notes written during the observation were: The tail was reddish with
multiple equal width bands, no sub-terminal band, with more reddish
distally than proximally, as well the left side of the tail was slightly
more red than the right side of the tail which was less red. There was a
thin eyeline on an otherwise white head with a black blob in the malar
area, no belly band but a few speckles in the flank area, white scapulars
and coverts.
 

 
Liza fancied a Krider's Hawk looking at the Raptor ID app. Looking at
Brian Wheeler's Raptors of Western North America at the time, I felt it
could be a juvenile light morph Harlan's Hawk, except today reading more
about it in his Birds of Prey of the East and looking at the pictures, the
back is not stark black and white as his images show.
 
I sent the images to the WRS coordinator for expert opinions. So far one
opinion is that it could be a Krider's Hawk or an intergrade between
Krider's and an Eastern borealis Red-tailed Hawk.
 
Any learned expert opinions with detailed reasons for your ID would be most
welcome.
 
I have to admit that neither of us have ever seen any of these possible
species! Our ID speculations are book/image-based only.
 
 
You can see what we found on our previous WRSs along the same and other
routes at
 
https://wrs.hmana.org/public_html/index.php as well as the 1 other route
developed in the past winter season in Colorado – the Nunn Raptor Alley
route conducted by Robert Beauchamp. Go to the website to the left sidebar
and click on Survey Map and enlarge it to Colorado, you can click on
individual surveys and using the drop-down menu, find previous survey
results.
 
Anyone can develop their own survey route. It is open to all. You can get
more information at:
 
https://www.hmana.org/winter-raptor-survey/
 
If you like raptors and know of an area with raptors you can develop your
own route, as long as it doesn't overlap an established one. Just follow
the guidelines on the website. If you want any questions answered you can
email the WRS coordinator Janice Sweet. I can also be of help if you want
someone local.
 
Ajit & Liza Antony
 
Central Park, CO (which used to be called Stapleton)
Diana Beatty <otowi33.33@gmail.com>: Dec 18 02:33PM -0700

The Fountain Creek CBC in El Paso County took place on December 14th, 2023
- it was a successful count even in the face of some challenging driving
and viewing conditions. We had snow, very dense fog, and some difficult or
impassable roads that affected some effort and finding.
 
We had 5306 birds and 81 species plus 4 count week species. While our
long-term average is higher, out of the past four years, we had the 2nd
highest number of species (we had 90 in 2020), and the 2nd lowest number of
birds (we had 4806 in 2021 when we had 70mph winds affecting effort and
findability of birds).
 
Some interesting count observations:
1. Greater White-Fronted Goose count week bird on 12/12 in FCRP.
2. Blue-winged Teal reported by our team in FCRP on count day is a new
count species. They noted it had been reported at the park a week or two
earlier.
3. Yellow-throated Warbler in FCRP was found on count day and numerous
times in count week, new species for the count.
4. Tennessee Warbler in FCRP was found during count week only by multiple
birders, new to the count.
5. Winter Wren was found in FCRP during count week.
6. One area had a 'strange' Spotted/Eastern Towhee - maybe a hybrid.
7. New High Count for Mourning Doves at 58 birds, more than the number of
Eurasian Collared Doves!
8. New High Count for American Pipits at 24, mostly in southern FCRP
(Fountain Creek Regional Park) along the creek.
9. New High Count for Pine Siskins at 128, mostly in Clear Spring Ranch.
10. New High Count for Western Meadowlark at 260, the biggest groups on
private property.
 
11. Some birds we found that we don't always get or are more rare (but not
new) - Bewick's Wren (1), Marsh Wren (2), Lapland Longspur (1), Canyon
Towhee (2), Swamp Sparrow (11), Scaled Quail (7), Harlan's Hawk (2),
Prairie Falcon (1), Ladder-backed Woodpecker (1), Lewis's Woodpecker (2),
Curve-billed Thrasher (4), Brown-headed Cowbird (1), Great-tailed Grackle
(2), Eastern Bluebird (9), Intergrade Northern Flicker (1).
 
12. Our other count-week-only bird was Wood Duck - not rare, but hiding
well on count day.
 
 
Diana Beatty
Fountain Creek CBC coordinator
El Paso County
Brandon <flammowl17@gmail.com>: Dec 18 09:21AM -0700

Both the Pomarine Jaeger and Yellow-billed Loon are still present this
morning at Pueblo Reservoir. Middle to East side of lake is the best
chance.
 
Brandon K. Percival
Pueblo West, CO
Douglas Kibbe <dpkibbe@msn.com>: Dec 18 03:40PM

Just a reminder for those planning to attend the Rawhide Power Station CBC on January 2:
I must submit a form with your names this week if you hope to enter the power station property and view the waterfowl concentrations behind the power plant. I currently have about a half dozen names. Thanks to those who responded promptly to my earlier notice. Are there others who plan to attend?
Anyone planning to attend the Rawhide CBC on Tuesday January 2, 2024 must let me know ASAP if they want to access the power station property.
I have to submit a form requesting access permission, so if you hope to see the large concentration of waterfowl in the cooling pond let me know now!
As in past years, we assemble at the power station reservoir overlook parking lot at 8 AM to break into teams. Compilation will be in Wellington at 1PM (location TBD).
Doug Kibbe Compiler
303-910-9476
dpkibbe@msn.com
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Saturday 23 December 2023

[cobirds] Black Vulture Update

The Black Vulture is still present and I saw it today 12/23 at 2:30 pm in the same location. To see it, go to Del Norte and find the junction of CR 14 and Hwy 160. From here go 5.0 miles up Pinos Creek and watch for the bird on the fence. Today it was on the deer carcass and then flew up to the fence. It is very predictable right now. But, I do think this bird is ill. It has lost a lot of breast feathers and is very approachable. I am wondering if lead poisoning might be a factor. Hoping the best for this bird and see it if you can. 

John Rawinski
Monte Vista, CO

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Re: [cobirds] Digest for cobirds@googlegroups.com - 2 updates in 2 topics

Wonderful Christmas present! Got mealworms?

Linda


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

On Dec 23, 2023, at 01:20, cobirds@googlegroups.com wrote:

elena <elena@indra.com>: Dec 22 08:59AM -0700

At my yard, seems to be eating ash berries and something from the juniper. Orders are welcome but please don't block the neighbors' access to the driveway.
 
 
Sent from my iPhone
Elena Holly Klaver
Federally Certified Court Interpreter
Conference Interpreter
English <> Spanish
303 475 5189
 
Member: American Translators Association
Colorado Translators Association
Pronouns: she, her, hers
 
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 Tratado de Fort Laramie en 1851, y que el estado de Colorado al esté de las Montañas Rocosas es territorio de muchos pueblos indígenas.
"mvjo...@gmail.com" <mvjohnski@gmail.com>: Dec 22 07:51AM -0800

I will be writing an article regarding this bird. For those of you who
traveled far to see it, please drop a line. Thanks.
 
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Friday 22 December 2023

[cobirds] Catbird continues in Niwot

At my yard, seems to be eating ash berries and something from the juniper. Orders are welcome but please don't block the neighbors' access to the driveway.


Sent from my iPhone
Elena Holly Klaver
Federally Certified Court Interpreter
Conference Interpreter
English <> Spanish
303 475 5189

Member: American Translators Association
Colorado Translators Association
Pronouns: she, her, hers

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 Tratado de Fort Laramie en 1851, y que el estado de Colorado al esté de las Montañas Rocosas es territorio de muchos pueblos indígenas.

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[cobirds] Re: Black Vulture near Del Norte

I will be writing an article regarding this bird. For those of you who traveled far to see it, please drop a line. Thanks. 

On Wednesday, December 20, 2023 at 6:15:31 PM UTC-7 mvjo...@gmail.com wrote:
I sent a message this am but evidently did not go through? 
The bird has been posted on I naturalist. Otherwise, from the intersection of County Rd 14 and Hwy 160, go up 14 for 5.0 miles  and watch on the east side of the road. The bird perches on fenceposts near a deer carcass. 

John Rawinski
Monte Vista CO

BLVU2_lo.jpg

On Tuesday, December 19, 2023 at 4:06:18 PM UTC-7 mvjo...@gmail.com wrote:
I have just received a report with photo of a Black Vulture reported near Del Norte. It has been feeding on a deer carcass for about 3 weeks according to the report. 
I will try and get more details in case some of you want to chase. This is likely the first ever for the San Luis Valley and a rare species Statewide. Will keep you posted.  Seems so late as the Turkey Vultures vanished months ago. 

John Rawinski
Monte Vista

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Thursday 21 December 2023

[cobirds] Re-sighting of very pale unidentified buteo at 1st Creek at DEN Open Space

The very beautiful Red-tailed Hawk we described on 12/17/23 was still there at the 1st Creek at DEN Open Space this afternoon. I could easily see it from the  parking lot with the naked eye because of its gleaming white breast and belly.
Any raptor enthusiasts with good camera equipment could take better pictures than Liza and I could with using a cell phone and spotting scope, such images could be posted/sent to raptor experts for ID.
So far our working hypothesis is that it could be an Eastern Red-tail x Krider's intergrade.

I found an excellent article from Birding March 2010 called "A study of Krider's Red-tailed Hawk" by Jerry Liguori and Brian L Sullivan which also discusses and depicts intergrades.
http://tinyurl.com/4upszd8d

An additional feature I saw when it flew from one tree to another was that it had very large white prominent rectangular patches just within the wingtips dorsally, as shown in figure 11b in the article.
My eBird checklist from this afternoon:
https://ebird.org/checklist/S156820852

Ajit Antony
Central Park, Colorado



On Wednesday, December 20, 2023 at 10:58:14 AM UTC-7 cogoshawk wrote:
In 2012, Dick Schottler and I found a leucistic RTHA during the Denver CBC. It so happens that we found this bird in my neighborhood, which is on the western edge of the count circle.  I was fortunate enough to watch this bird, likely a female (she was bigger than any other RTHA that tried to consort with her) up through 2020 when she disappeared. One thing I noticed over time was that she became whiter and whiter, although her red tail feathers remained distinct.  I have a couple of photos if anyone is interested, but I have to say when I saw Ajit and Lisa's photos, my first thought was "wow, another leucistic red tail!" I also remember sometime back in the last year or two someone reporting on finding a leucistic RTHA corpse.  All of which suggests that leucism is a bit more common than we may tend to think.

Ed Furlong
Evergreen, CO

On Tuesday, December 19, 2023 at 3:57:52 PM UTC-7 Ajit Antony wrote:
Hi Kevin and everyone else.
I looked up Brian K Wheeler's 'Birds of Prey of the East' ( this is the first of his 2 books that came out, and I bought it when I was living in New York).
He has a plate devoted to 'Albinos and other Variants,' Plate 34 where he shows albinos and lucistic RTHA,  where he says in a picture of a Eastern partial albino that "Albinism affects wings and dorsal body surface more commonly than ventral body surface and tail." 
A few weeks ago we were at East 126th Avenue doing a raptor survey and we did see a leucistic RTHA which had large splotchy white patches on its dorsum as it flew, correctly IDd by Liza my wife and partner in the winter raptor surveys that we do.
Ajit Antony
Central Park, Colorado

On Tue, Dec 19, 2023, 10:21 AM 'KevyG...@aol.com' via Colorado Birds <cob...@googlegroups.com> wrote:
Perhaps the mystery buteo is a leucistic Red-tailed Hawk?

Kevin Corwin
Centennial, Arapahoe County

On Monday, December 18, 2023 at 9:06:48 PM UTC-7 aiant...@gmail.com wrote:

December Winter Raptor Survey of Rocky Mountain Arsenal NWR and DIA Raptor Alley, with sighting of a mystery buteo

This is our 2nd season doing volunteer Winter Raptor Surveys (WRS) for the Hawk Migration Association of North America (HMANA) since moving to Denver in July 2022. Prior to moving we did 4 WRS in New York State in the Hudson Valley area since 2016.

Last winter season we did 3 surveys here – 1 in Denver and 2 in Boulder in December 2022, and January and February 2023 for each route, following it exactly, and roughly in the same week each month.

This year we added another WRS in the area between Bennett and Jackson Lake SP. We did that route a week ago with nothing special to report. It may improve as winter progresses.

Yesterday we completed the Rocky Mountain Arsenal to Barr Lake, and west of Denver International Airport route for December 2023.

We saw and identified 78 Raptors, including

Ferruginous Hawk          5, all adult

Prairie Falcon                 1, which attacked a Red-tailed Hawk as well as a Northern Harrier

Bald Eagle                      25

Northern Harrier             10

American Kestrel            5

Red-tailed Hawk            25, including 2 dark morph RT on Piccadilly Road at Barr Lake, one perched and both in flight together. Spectacular.

In addition we had a mystery buteo at 1st Creek at DEN Open Space perched in a tree next to Peña Boulevard at 10:15 AM. When we finished our survey and on the way back we could still see it (presumably the same buteo) at the same location at 4:30 PM while driving south on Peña Boulevard.

Our eBird checklist for that location with images is:

https://ebird.org/checklist/S156663182

My notes written during the observation were: The tail was reddish with multiple equal width bands, no sub-terminal band, with more reddish distally than proximally, as well the left side of the tail was slightly more red than the right side of the tail which was less red. There was a thin eyeline on an otherwise white head with a black blob in the malar area, no belly band but a few speckles in the flank area, white scapulars and coverts. 

 

Liza fancied a Krider's Hawk looking at the Raptor ID  app. Looking at Brian Wheeler's Raptors of Western North America at the time, I felt it could be a juvenile light morph Harlan's Hawk, except today reading more about it in his Birds of Prey of the East and looking at the pictures, the back is not stark black and white as his images show.

I sent the images to the WRS coordinator for expert opinions. So far one opinion is that it could be a Krider's Hawk or an intergrade between Krider's and an Eastern borealis Red-tailed Hawk.

Any learned expert opinions with detailed reasons for your ID would be most welcome.

I have to admit that neither of us have ever seen any of these possible species! Our ID speculations are book/image-based only.


You can see what we found on our previous WRSs along the same and other routes at

https://wrs.hmana.org/public_html/index.php as well as the 1 other route developed in the past winter season in Colorado – the Nunn Raptor Alley route conducted by Robert Beauchamp. Go to the website to the left sidebar and click on Survey Map and enlarge it to Colorado, you can click on individual surveys and using the drop-down menu, find previous survey results.

Anyone can develop their own survey route. It is open to all. You can get more information at:

https://www.hmana.org/winter-raptor-survey/

If you like raptors and know of an area with raptors you can develop your own route, as long as it doesn't overlap an established one. Just follow the guidelines on the website. If you want any questions answered you can email the WRS coordinator Janice Sweet. I can also be of help if you want someone local.

Ajit & Liza Antony

Central Park, CO (which used to be called Stapleton)

 

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Wednesday 20 December 2023

[cobirds] Red Fox Sparrow at Ken Caryl, JeffCo

A Red Fox Sparrow reappeared in my Ken Caryl yard first thing this morning, last noted 12/14. Except for one day it has always appeared only in the dim early light of 6:50-7:20 am, usually as the first bird of the morning. It is there briefly while the light is too low to see well, and then it is not around. I hope it settles into a more cooperative viewing pattern.  A recording of today's morning greeting of call notes is on this checklist

David Suddjian
Littleton, CO

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[cobirds] Re: Black Vulture near Del Norte

I sent a message this am but evidently did not go through? 
The bird has been posted on I naturalist. Otherwise, from the intersection of County Rd 14 and Hwy 160, go up 14 for 5.0 miles  and watch on the east side of the road. The bird perches on fenceposts near a deer carcass. 

John Rawinski
Monte Vista CO

BLVU2_lo.jpg

On Tuesday, December 19, 2023 at 4:06:18 PM UTC-7 mvjo...@gmail.com wrote:
I have just received a report with photo of a Black Vulture reported near Del Norte. It has been feeding on a deer carcass for about 3 weeks according to the report. 
I will try and get more details in case some of you want to chase. This is likely the first ever for the San Luis Valley and a rare species Statewide. Will keep you posted.  Seems so late as the Turkey Vultures vanished months ago. 

John Rawinski
Monte Vista

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[cobirds] Colorado Birding Discord

Hello, there is a Colorado birding discord if anyone is interested. There's cannels for most of the counties and it's a good way to stay informed, as well as a great pace to discuss Colorado wildlife in general.

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[cobirds] Cherry Creek Res.

Hi

One Ad. Lesser-Black-backed Gull amongst a flock of gulls on the very north central side of the res.

Bob Righter
Denver CO

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[cobirds] John Martin Reservoir CBC results

Birders, 

The John Martin Reservoir CBC took place on Monday, December 18th, postponed by a major storm event on the scheduled count day of December 14th. The 16 participants were rewarded with a calm day with temperatures in the upper 50s and light winds. 108 species were tallied, for an average of 6.75 species added to the count for every participant. Truly, every participant makes a difference to count results here. This is an average count for this CBC. Many unusual birds were seen, with some first-time misses. 

New for the count were 3 LONG-BILLED DOWITCHERS. Four shorebird species were found (Killdeer, Least Sandpiper, Greater Yellowlegs and the Dowitchers). Perhaps for the first time, Wilson's Snipe could not be found.

Nearly all expected duck species were found, some (like Red-breasted Merganser) in record numbers. "Puddle" ducks were conspicuous, especially on Lake Hasty. We often have a hard time finding them on this count. One Long-tailed Duck was found among thousands of other waterfowl on the Reservoir, but there were no Scoters. Notably absent was Wood Duck, missed for the first time (I have noticed increased hunter pressure at all of their favorite haunts). Snow Geese numbers were way down, with only 5000 on the reservoir. 

Only 4 species of gulls were located, well below average. Despite open water, there were no Loons, and only one Eared Grebe, not normal for this count. 

Land birds picked up some of the slack.

Three Ladder-backed Woodpeckers was a new high for the count. One party found a Say's Phoebe. There were single Gray Catbirds and Curve-billed Thrashers. The count tallied a Red-breasted Nuthatch for only the second time. Wrens highlighted the count with four Bewick's Wrens, one Winter Wren, and one CAROLINA WREN, for the second time on the count. We found no warblers, unusual for the count. 

Our counters are good at finding wintering sparrows. One party found six Savannah Sparrows. Another found a Lincoln's Sparrow. Four Harris' Sparrows was a high for the count. Song and American Tree Sparrows were seen in record low numbers, while White-crowned Sparrows seem to have taken over the planet here. 

The most popular bird on the count was a female EASTERN TOWHEE, seen and photographed by more than half the count participants. I have stopped feeding in the bottomlands it haunts, as it's so labor intensive, and passing trains and hordes of hunters make seeing it dangerous. Four Northern Cardinals were tallied at three separate locations, often near the Towhees. 

Blackbirds were well represented on the count, with all eight species of grackles, blackbirds as well as Brown-headed Cowbird present in good numbers. Six Rusty Blackbirds at a feedlot provided a new count high. 

Some year, maybe the stars will align, and land, water and mountain birds will all show up in the same year. We'll keep trying.

Duane Nelson
Las Animas, Bent Counnty, CO


Re: [cobirds] Black Vulture near Del Norte

Several birders are seeing this Black Vulture.  37.6344230, -106.4246145

Brandon Percival
Pueblo West, CO


On Tue, Dec 19, 2023 at 4:06 PM mvjo...@gmail.com <mvjohnski@gmail.com> wrote:
I have just received a report with photo of a Black Vulture reported near Del Norte. It has been feeding on a deer carcass for about 3 weeks according to the report. 
I will try and get more details in case some of you want to chase. This is likely the first ever for the San Luis Valley and a rare species Statewide. Will keep you posted.  Seems so late as the Turkey Vultures vanished months ago. 

John Rawinski
Monte Vista

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Re: [cobirds] Re: December Winter Raptor Survey, and sighting of a mystery buteo

In 2012, Dick Schottler and I found a leucistic RTHA during the Denver CBC. It so happens that we found this bird in my neighborhood, which is on the western edge of the count circle.  I was fortunate enough to watch this bird, likely a female (she was bigger than any other RTHA that tried to consort with her) up through 2020 when she disappeared. One thing I noticed over time was that she became whiter and whiter, although her red tail feathers remained distinct.  I have a couple of photos if anyone is interested, but I have to say when I saw Ajit and Lisa's photos, my first thought was "wow, another leucistic red tail!" I also remember sometime back in the last year or two someone reporting on finding a leucistic RTHA corpse.  All of which suggests that leucism is a bit more common than we may tend to think.

Ed Furlong
Evergreen, CO

On Tuesday, December 19, 2023 at 3:57:52 PM UTC-7 Ajit Antony wrote:
Hi Kevin and everyone else.
I looked up Brian K Wheeler's 'Birds of Prey of the East' ( this is the first of his 2 books that came out, and I bought it when I was living in New York).
He has a plate devoted to 'Albinos and other Variants,' Plate 34 where he shows albinos and lucistic RTHA,  where he says in a picture of a Eastern partial albino that "Albinism affects wings and dorsal body surface more commonly than ventral body surface and tail." 
A few weeks ago we were at East 126th Avenue doing a raptor survey and we did see a leucistic RTHA which had large splotchy white patches on its dorsum as it flew, correctly IDd by Liza my wife and partner in the winter raptor surveys that we do.
Ajit Antony
Central Park, Colorado

On Tue, Dec 19, 2023, 10:21 AM 'KevyG...@aol.com' via Colorado Birds <cob...@googlegroups.com> wrote:
Perhaps the mystery buteo is a leucistic Red-tailed Hawk?

Kevin Corwin
Centennial, Arapahoe County

On Monday, December 18, 2023 at 9:06:48 PM UTC-7 aiant...@gmail.com wrote:

December Winter Raptor Survey of Rocky Mountain Arsenal NWR and DIA Raptor Alley, with sighting of a mystery buteo

This is our 2nd season doing volunteer Winter Raptor Surveys (WRS) for the Hawk Migration Association of North America (HMANA) since moving to Denver in July 2022. Prior to moving we did 4 WRS in New York State in the Hudson Valley area since 2016.

Last winter season we did 3 surveys here – 1 in Denver and 2 in Boulder in December 2022, and January and February 2023 for each route, following it exactly, and roughly in the same week each month.

This year we added another WRS in the area between Bennett and Jackson Lake SP. We did that route a week ago with nothing special to report. It may improve as winter progresses.

Yesterday we completed the Rocky Mountain Arsenal to Barr Lake, and west of Denver International Airport route for December 2023.

We saw and identified 78 Raptors, including

Ferruginous Hawk          5, all adult

Prairie Falcon                 1, which attacked a Red-tailed Hawk as well as a Northern Harrier

Bald Eagle                      25

Northern Harrier             10

American Kestrel            5

Red-tailed Hawk            25, including 2 dark morph RT on Piccadilly Road at Barr Lake, one perched and both in flight together. Spectacular.

In addition we had a mystery buteo at 1st Creek at DEN Open Space perched in a tree next to Peña Boulevard at 10:15 AM. When we finished our survey and on the way back we could still see it (presumably the same buteo) at the same location at 4:30 PM while driving south on Peña Boulevard.

Our eBird checklist for that location with images is:

https://ebird.org/checklist/S156663182

My notes written during the observation were: The tail was reddish with multiple equal width bands, no sub-terminal band, with more reddish distally than proximally, as well the left side of the tail was slightly more red than the right side of the tail which was less red. There was a thin eyeline on an otherwise white head with a black blob in the malar area, no belly band but a few speckles in the flank area, white scapulars and coverts. 

 

Liza fancied a Krider's Hawk looking at the Raptor ID  app. Looking at Brian Wheeler's Raptors of Western North America at the time, I felt it could be a juvenile light morph Harlan's Hawk, except today reading more about it in his Birds of Prey of the East and looking at the pictures, the back is not stark black and white as his images show.

I sent the images to the WRS coordinator for expert opinions. So far one opinion is that it could be a Krider's Hawk or an intergrade between Krider's and an Eastern borealis Red-tailed Hawk.

Any learned expert opinions with detailed reasons for your ID would be most welcome.

I have to admit that neither of us have ever seen any of these possible species! Our ID speculations are book/image-based only.


You can see what we found on our previous WRSs along the same and other routes at

https://wrs.hmana.org/public_html/index.php as well as the 1 other route developed in the past winter season in Colorado – the Nunn Raptor Alley route conducted by Robert Beauchamp. Go to the website to the left sidebar and click on Survey Map and enlarge it to Colorado, you can click on individual surveys and using the drop-down menu, find previous survey results.

Anyone can develop their own survey route. It is open to all. You can get more information at:

https://www.hmana.org/winter-raptor-survey/

If you like raptors and know of an area with raptors you can develop your own route, as long as it doesn't overlap an established one. Just follow the guidelines on the website. If you want any questions answered you can email the WRS coordinator Janice Sweet. I can also be of help if you want someone local.

Ajit & Liza Antony

Central Park, CO (which used to be called Stapleton)

 

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Tuesday 19 December 2023

[cobirds] BIRD BOMBS: I Wish They All Could Be California Gulls January 11

Hi CoBirders,

Gulls continue in the BIRD BOMBS crosshairs this January. Register now for BIRD BOMBS: I Wish They All Could Be California Gulls, set to explode on January 11 at 7 pm. This episode will help you identify and enjoy the wide variety of Colorado's winter gulls, with a focus on 8 core winter species. 

Check out the video of BIRD BOMBS: Get Gullable to learn key basics of Colorado gull ID. Videos of all 23 episodes at DFO's BB video archive.

David Suddjian
Littleton, CO


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