Date: 12/10/25 11:51 am From: Archer Silverman <archer.silverman...> Subject: Re: [cobirds] Help with hybrid(?) goose identification
The first bird does look good for Greater White-fronted X Cackling to me.
There’s this one pair of Greater White-fronted X Cackling in California
that are a good reference for that hybrid(see attached image). The other
two birds do look good for Snow X Cackling, probably juvenile blue morph
Snows X Cackling.
Archer Silverman
Denver
On Wed, Dec 10, 2025 at 12:42 PM Mike Britten <mikebritten25...>
wrote:
> Folks,
>
> I birded at Union Reservoir near Longmont this morning. There were
> thousands of geese (along with 22 bald eagles looking for an easy meal).
> Mostly they were cackling geese but a few snow geese (including a dark
> morph), a couple of Ross' geese (including a dark morph bird but I'm not
> sure it is a pure Ross' goose?) and one greater white-fronted goose were
> also there.
>
> There were also a few puzzling (to me) hybrids. I wonder if anyone has
> thoughts as to what these might be? Photos include in the checklist.
>
> Mike Britten
>
> checklist: https://ebird.org/checklist/S288035287 >
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