Date: 12/26/18 7:18 pm
From: markchavez <markchavez...>
Subject: Re: [cobirds] Re: Larimer County gull report
To comment on Brandon's post, are we confirming this gull is a Slaty-backed Gull? Most of the sightings were viewed at a great distance with very distant shots if any at all.  Referencing the Tufted Duck from Marsten many called the duck until difinitive photos proved otherwise. I noticed Ebird confirmed the sightings so I was wondering if I'm missing something. Just wondering if a chase makes sense...
Mark Chavez


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-------- Original message --------From: Brandon <flammowl17...> Date: 12/26/18 7:55 PM (GMT-07:00) To: Nicholas Komar <quetzal65...> Cc: cobirds <cobirds...> Subject: [cobirds] Re: Larimer County gull report
Not to cause trouble, I know the adult Slaty-backed Gull from Larimer County in 2000 that I saw, had bubble gum pink colored legs, does this bird have them.  In the photos, the bird shows pink legs, though not sure the bright pink I remember with other Slaty-backeds I have seen, mostly from Alaska, and the one in Colorado.  Other things on this bird look pretty good for Slaty-backed, though hybrids of other species can be look like Slaty-backed like.  
Good gulling, it is always interesting this time of year!

Brandon K. Percival
Pueblo West, CO

Sent from my Android
On Wed, Dec 26, 2018, 7:45 PM Nicholas Komar <quetzal65...> wrote:
Like yesterday, the bulk of the Larimer gull flock was hanging out late this afternoon at Warren Lake, about 5 miles northeast of the county landfill. The gulls present are listed in my eBird checklist (below).  One of these may have been Slaty-backed Gull (see low-quality photos by clicking on the link for the eBird checklist). 
Note that there was no Great Black-backed Gull(s). This species is reported almost daily of late but has never been photographed. If you see it, please make an effort to photograph it for documentation. Thanks. 
Nick KomarFort Collins CO
eBird Report 

Warren Lake, Larimer, Colorado, US
Dec 26, 2018 3:03 PM - 4:42 PM
Protocol: Stationary
13 species (+1 other taxa)

Cackling Goose (Richardson's) (Branta hutchinsii hutchinsii)  20
Canada Goose (Branta canadensis)  60
Mallard (Anas platyrhynchos)  1
Ring-billed Gull (Larus delawarensis)  300
California Gull (Larus californicus)  1
Herring Gull (American) (Larus argentatus smithsonianus)  130     Tally
Iceland Gull (Thayer's) (Larus glaucoides thayeri)  3     Two adult, one juv
Lesser Black-backed Gull (Larus fuscus)  10
Slaty-backed Gull (Larus schistisagus)  1     Pink legs. I’m unsure of the species identity.  Could be SBGU or maybe a pink-legged fourth-winter LBBG.
Glaucous Gull (Larus hyperboreus)  1
Herring x Glaucous Gull (hybrid) (Larus argentatus x hyperboreus)  1     Continuing
Belted Kingfisher (Megaceryle alcyon)  1
Northern Flicker (Colaptes auratus)  1
Black-capped Chickadee (Poecile atricapillus)  1

View this checklist online at https://ebird.org/view/checklist/S50979146




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