[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 Birds.

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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