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 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 > >