[cobirds] Re: Black-legged Kittiwake continues

2018-12-28 Thread David Suddjian
Just to follow up, we returned to Horsetooth at noon and saw the *Black-legged
Kittiwake* again, this time near Dixon Dam.

We did not see the Gyrfalcon on a view visits its known area. I would
appreciate hearing if it was seen today,

David Suddjian
Littleton, CO


On Fri, Dec 28, 2018 at 10:18 AM David Suddjian  wrote:

> The DFO trip just had a brief flyby as the kittiwake appeared out of the
> north, passed near our spot near the dam and then returned back to the
> north.
>
> David Suddjian
> Littleton Co
>
> Sent from my iPhone

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[cobirds] Slaty-backed Gull

2018-12-28 Thread 'Steven Mlodinow' via Colorado Birds
Greetings All


Sorry to be a bit harsh, but to focus on the leg color of the Slaty-backed Gull 
(SBGU) based on from fuzzy poorly lit photos is a great silliness. Comments 
based on experience with a single bird is rash, at best. For instance, look at 
the SBGU at https://ebird.org/view/checklist/S32827708


Leg color is famously variable in gulls, based on age, hormones, even 
temperature. In the Pacific NW, where these beasts are regular, we paid little 
attention to the leg color of a potential SBGU. And also note that observers of 
this bird did note that the legs were brighter pink than surrounding Herring 
Gulls


Indeed, as with any gull, confident diagnosis is based on a set of marks, as 
any given mark is variable within any given species. 


The short wings, presence of a secondary skirt, dull yellow and proportionately 
gentle bill, large chested and small headed build, prominent dusky smudge 
around a staring white eye, pink legs, broad tertial and scapular crescents, 
broad white trailing edge to wing, and primary pattern (some of these marks 
seen at close range, others at distance, many both) form basis for a solid ID


Part of the problem is that there have been a number of reports clearly NOT 
referring to the original bird which had minimal red and no black on bill. 


I have not seen a convincing description of this bird since 23 December, which 
does not mean subsequent sightings have been in error. Clearly, birds with big 
bills, prominent red, or any black refer to a different bird than that 
originally seen. Birds with bulky heads, likewise.


Best Regards
Steven Mlodinow

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[cobirds] volunteer opportunity: News from the Field

2018-12-28 Thread David Dowell
"News from the Field" has been a regular article in the CFO's quarterly 
journal "Colorado Birds" for a long time, summarizing bird trends and rare 
birds in Colorado.  I've enjoyed contributing during the last few years. 
 It's been a great opportunity to learn about bird distributions in 
Colorado and what rare birds are being found around the state.

My contributions to "News from the Field" have relied heavily on the ebird 
"basic dataset".  Unfortunately this ebird dataset isn't available to me 
any more.

It would be possible to write "News from the Field" from reports from 
Cobirds, the West Slope Birding Network, and social media.  If you might be 
interested in contributing to "News from the Field", possibly taking it in 
a new direction, contact me (dave1wx at gmail.com) and Colorado Birds 
editor Christy Payne.

David Dowell
Longmont, Colorado

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[cobirds] good articles explaining eBird's sensitive species system

2018-12-28 Thread Scott Severs
Here's some helpful articles on how Cornell's eBird handles Sensitive 
Species in the database. Helpful to review, understand, and to help 
declining species and habitats.

Helpful guidelines for birders for reporting sensitive species:
https://help.ebird.org/customer/portal/articles/1006789

How how the eBird database handles sensitive species:
https://help.ebird.org/customer/portal/articles/2885265

Complete list of birds falling under eBird's Sensitive Criteria and 
database output rules:
https://help.ebird.org/customer/portal/articles/2879207-sensitive-species-list?b_id=1928

Best,
Scott Severs
Longmont

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[cobirds] Black-legged Kittiwake continues

2018-12-28 Thread David Suddjian
The DFO trip just had a brief flyby as the kittiwake appeared out of the north, 
passed near our spot near the dam and then returned back to the north.

David Suddjian
Littleton Co

Sent from my iPhone

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[cobirds] Behavior of leucistic Canada Goose - Pueblo

2018-12-28 Thread Leon Bright
COBirders--  Yesterday I posted a couple of images of a (lesser-type) Canada
Goose that may be leucistic.  I was interested to see that it wanted to join
a group of five other Canadas, but whenever it tied to become part of the
group they chased it away.

Leon Bright, Pueblo

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[cobirds] Colorado Rare Bird Alert, 28 December 2018

2018-12-28 Thread Joyce Takamine
Date: December 28, 2018
Compiler:  Joyce Takamine
E-mail:  RBA  AT cobirds.org

This is the Colorado Rare Bird Alert for Friday, December 28, sponsored by
Denver Field Ornithologists.

Rare, out of place and out of season species include:
(*) indicates new information on this species; CAPITAL LETTERS are used for
very rare species, as listed by the Colorado Bird Records Committee,

Observers have been diligent in reporting sightings on COBirds - thanks!
Please check there for updates.

PINK-FOOTED GOOSE (Weld)
Snow Goose (Adams, Arapahoe)
Ross’s Goose (Arapahoe)
Brant (Weld)
Wood Duck (*Montrose)
Black Scoter (*Arapahoe, Jefferson)
Long-tailed Duck (Weld)
Barrow’s Goldeneye (*Eagle, Mesa, Pueblo)
Greater Roadrunner (*El Paso)
Black-legged Kittiwake (*Larimer)
Bonaparte’s Gull (Pueblo)
Mew Gull (Adams)
Iceland Gull (Adams, Arapahoe, Kiowa, *Larimer)
SLATY-BACKED GULL (Larimer)
GLAUCOUS-WINGED GULL (Larimer)
Glaucous Gull (*Larimer)
Great Black-backed Gull (Adams, Araphaoe, Larimer, *Pueblo)
Green Heron (Pueblo)
Black-crowned Night-Heron (Pueblo)
Northern Goshawk (*Arapahoe, El Paso)
Yellow-bellied Sapsucker (Boulder)
GYRFALCON (*Larimer)
Lewis’s Woodpecker (La Plata)
Vermillion Flycatcher (Boulder)
Bushtit (Mesa)
Winter Wren (Jefferson, *Teller)
SEDGE WREN (Eagle)
Hermit Thrush (La Plata)
Gray Catbird (Yuma)
Northern Mockingbird (Boulder)
Gray-crowned Rosy-Finch (El Paso)
Black Rosy-Finch (El Paso)
Brown-capped Rosy-Finch (El Paso)
Common Redpoll (*Routt)
Pine Siskin (Kiowa)
Lapland Longspur (Arapahoe)
Field Sparrow (El Paso)
Fox Sparrow (Red) (Kiowa, Yuma)
Lincoln’s Sparrow (Mesa)
Swamp Sparrow (Kiowa, Weld)
Yellow-headed Blackbird (Yuma)
Brown-headed Cowbird (Larimer)
Palm Warbler (Boulder)
Yellow-rumped Warbler (La Plata)

ADAMS COUNTY:
---On December 22 at Barr Lake SP, Ira Sanders and Reed Gorner reported
1-st yr Great Black-backed Gull.  On December 24 at Barr Lake SP, Steve
Mlodinow reported Snow Goose, Mew Gull, and Iceland (Thayer’s) Gull.

ARAPAHOE COUNTY:
---On December 24 at Aurora Reservoir, Steve Mlodinow and Sean Walters
reported 5 Snow Geese, 2 Ross’s Geese, 3 Iceland (Thayer’s) Gull, Great
Black-backed Gull, and Lapland Longspur.
---On December 27 at South Platte Reservoir, Charlie Chase reported Black
Scoter which was first seen on December 20.
---On December 27 at S Platte River – Northern Wildlife Area to West Bowles
Ave, Brian Johnson reported juv Northern Goshawk.

BOULDER COUNTY:
---On December 21 a Palm Warbler was reported by Luke Pheneger at Longmont
Wastewater Treatment Ponds.  On December 22 at Longmont Wastewater
Treatment Plant, Ron Podhajsky reported Palm Warbler.
---On December 18 the male Vermillion Flycatcher was seen again at Walden
Ponds, having been here since mid-November.  On December 22 at Cottonwood
Marsh, Chris Friedman reported Vermilion Flycatcher.  On December 24 at
Walden Ponds, Kevin Rutherford reported Vermilion Flycatcher.  On December
26 at Walden Ponds/Cottonwood Marsh, Chris Owens and Chris Gilbert reported
Vermilion Flycatcher.
---On December 23 on Centennial Trail—Dimmitt Drive to Old Tale Road,
Leslie S reported Northern Mockingbird.
---On December 24 on Coal Creek on E side of Dutch Creek Park near Chestnut
in Louisville, Ryan Bushong reported Yellow-bellied Sapsucker.

EAGLE COUNTY:
---On December 25 at Lake Creek Village Wetlands, Eric Culbertson reported
continuing SEDGE WREN.
---On December 27 at Seven Castle in Basalt, Louise Glaser reported 8
Barrow’s Goldeneyes (2m, 6 f).

EL PASO COUNTY:
---On December 19 through December 21 at Red Rock Canyon Open Space, Jim
Merritt reported Field Sparrow.
---On December 21 at Rainbow Gulch Trail, Terence Berger, David and John
Marvin reported 300 Gray-crowned Rosy-Finch, 5 Black Rosy-Finch, and 8
Brown-capped Rosy-Finch on shoreline of Rampart Reservoir.  On December 25
at Rainbow Gulch Trail, James McCall reported Northern Goshawk and Tyler
Stewart reported 150 Gray-crowned Rosy-Finch, 1 Black Rosy-Finch, and 3
Brown-capped Rosy-Finch.  On Decemeber 26 at Rainbow Gulch Trail, Tyler
Wilson reported 39 Gray-crowned Rosy-Finch, 6 Gray-crowned (Hepburn’s)
Rosy-Finch, 7 Black Rosy-Finch, 20 Brown-caped Rosy-Finch.
---On December 27 on Hanover Road, David Marvin reported Greater Roadrunner.

JEFFERSON COUNTY:
---On December 20 at Bear Creek Greenbelt – S Kipling Pkwy to S Wadsworth,
Tom Wilberding reported Winter Wren about .5 mile east of Estes, 300 ft
east of beaver dam.  On December 21 at Bear Creek Greenbelt, Timothy
Burkhardt reported Winter Wren.  On December 22 at Bear Creek Greenbelt,
Michael Lester reported Winter Wren.
---On December 25 at South Platte Reservoir Southwest Bay, Joey Kellner
and Crystal Wilson reported Black Scoter.

KIOWA COUNTY:
---On December 22 at Neegronda Reservoir, Steve Mlodinow reported 3 Iceland
(Thayer’s) Gulls, and 22 Pine Siskins.
---On December 22 at Upper Queens/Neeskah Reservoir, Steve Mlodinow
reported Swamp Sparrow and Fox (Red) Sparrow.

LA PLATA COUNTY:
—On December 23