Date: 2/10/18 8:32 am
From: Michael Lamson <michael.a.lamson...>
Subject: [cobirds] Re: Unusual goose at Stearn's Lake (Boulder County) -- Monday Jan 29
Look at the Swan Goose X Canada goose hybrid on page 16 of the 2011 Sibley

Michael Lamson
Boulder County

On Monday, January 29, 2018 at 7:19:27 PM UTC-7, Alex Brown wrote:
> This morning Gillian and I found a very unusual goose at Stearn's Lake
> (southeast Boulder County).
> The bird resembled a "Blue" Snow Goose but had an all dark beak and
> non-standard plumage.
> Our best guess is that the bird is a Snow Goose hybrid with either Canada
> or Cackling Goose.
> There is a faint but obvious "grin" patch on the beak, so it is unlikely
> to be a Ross's Goose hybrid.
> There were six Snow Geese this morning at Stearn's Lake -- three "white"
> and three "Blue".
> This the most Snow Geese that I have ever seen at one place in Boulder
> County.
> Alex Brown
> Boulder, CO

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