Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Anser albifrons.
January 30, 1909.
To-day I received an adult of this
species, with white face and black mottled
belly.
January 3, 1909.
I have received another adult (?) of this
species, with white face, but very slightly
mottled belly. It appears to me immature, as the white of the
face is not as extensive and is slightly
mottled with black feathers.
January 21, 1909.
A few days ago I obtained a third
specimen of this species, similar to the
first, and apparently a full adult.
March 13, 1909.
Of the six birds of this species which I have
there is a great variation in the amount of
black on the belly, some having a great
deal, and one only one or two spots,
March 18, 1909.
The chucking notes uttered by this species are
in a much higher pitch than those uttered by
the Snow Geese and Ross's Geese.