Date: 2/2/26 8:54 pm
From: 'Tony Leukering' via Colorado Birds <cobirds...>
Subject: Re: [cobirds] What's Up with That-Goose Edition
Doug et al.:

Snow Geese have pink legs, not orange, and *Branta* geese have blackish
legs. It would have been best to have another goose in the photo for size
and shape reference. However, I'd say the non-*Branta* goose parent of your
bird is likely to be a Greater White-fronted, given the very angular head
typical of Greater White-fronted and the Richardson's subspecies of
Cackling Goose (the abundant one in Colorado), and unlike the very round
heads of Snow and Ross's geese.

Greater White-fronted Goose x Cackling Goose: ML143981681 - Greater
White-fronted x Cackling Goose (hybrid) - Macaulay Library
<https://macaulaylibrary.org/asset/143981681>, ML629986276 - Greater
White-fronted x Cackling Goose (hybrid) - Macaulay Library
<https://macaulaylibrary.org/asset/629986276>

Snow Goose x Cackling Goose: ML186852311 - Snow x Cackling Goose (hybrid) -
Macaulay Library <https://macaulaylibrary.org/asset/186852311>, ML122725591
- Snow x Cackling Goose (hybrid) - Macaulay Library
<https://macaulaylibrary.org/asset/122725591>

Greater White-fronted Goose: ML240501151 - Greater White-fronted Goose -
Macaulay Library <https://macaulaylibrary.org/asset/240501151>
Snow Goose: ML511417461 - Snow Goose - Macaulay Library
<https://macaulaylibrary.org/asset/511417461>
Ross's Goose: ML199578601 - Ross's Goose - Macaulay Library
<https://macaulaylibrary.org/asset/199578601>
Cackling Goose: ML139157731 - Cackling Goose (Richardson's) - Macaulay
Library <https://macaulaylibrary.org/asset/139157731>

Enjoy,

Tony Leukering
Denver
On Sunday, February 1, 2026 at 4:42:32 PM UTC-7 Patrick O'Driscoll wrote:

> I'm no goose expert, but I see a lot of them in Denver City Park through
> the winter.
> What interests me most about this one are the notable striations up and
> down its neck plumage.
> That characteristic reminds me most of Greater White-fronted Goose and
> also of some domestic geese with Graylag and/or Swan Goose parentage.
> I'd wager one or the other of these might be in this bird's genetic makeup.
>
> Patrick O'Driscoll
> Denver
>
>
>
> On Sun, Feb 1, 2026 at 3:20 PM Doug Ward <doug......> wrote:
>
>> Several of us conducted a DFO field trip yesterday (Sat., 31 Jan’26)
>> along the South Platte River near the Overland Golf Course (Denver Co.) to
>> study waterfowl at close range. While we had good looks at many of the
>> beautiful regulars on this stretch, including the now famous drake BARROW’S
>> GOLDENEYE, had a very weird hybrid goose that had us stumped, so asking
>> COBirders to chuck in their thoughts (photos below and attached):
>>
>>
>>
>>
>>
>>
>>
>> Initial thoughts were Greater White-fronted X Cackling Goose based on its
>> general coloration, including its superficial “white-front”, but also its
>> bright yellow-orange legs as can be seen in the second photo. After
>> further examination of Bonnie’s (Prado) great photos, now thinking this guy
>> has too much white on its face, so now thinking it may be a Snow X Cackling
>> back cross with a full Cackling. Again, interested in what the group
>> thinks – maybe we start a New York Times daily puzzle…GooseConnections!
>>
>>
>>
>> Bonnie was our “hybrid whisperer” yesterday as she also found this likely
>> Snow X Cackling hybrid in the horde as well:
>>
>>
>>
>> So again, interested in your opinions so let the group know, these guys
>> are fun. If interested in our morning, here is a link to the trip report:
>> https://ebird.org/tripreport/470832
>>
>>
>>
>> Good Goosing,
>>
>> Doug
>>
>> Currently Denver
>>
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