Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1978
Tufted Duck
Aythya fuligula
Jan. 2 La Jolla Merritt, Alameda Co., Calif: 1 ♂ at eastern end of
lajla where it has been for 2+ months. Tuft is much
less prominent now than when I saw the bird in late
October
Jan.3 LaJolla Merritt: 1 ♂ (same bird)
Feb.8 Point Reyes, Marin Co., Calif: 1 imm. ♂ in freshwater pond
next to road just S. of parking lot. In addition to
a very small tuft, the entire bill tip was black and
the back was a very uniform blackish-brown, probably
darker than most scaup. [this combination eliminating scaup].
The head was more or less scaup-shaped [eliminating
Ring-necked Duck]. The bird was thought to be an imm. ♂ due
to the presence of some patches of white feathers along
flanks.
iris pale (looked gold)
bill
blue-gray
with solid
black tip
short tuft
(no triangular
nail)
<trace of
sketch made
during
observation>
sides varying shades of brown - some areas
looked nearly pure white, especially towards rear.
The bird was studied for 15 minutes with a scope, but
high winds made precise accuracy of details hard to note.
The bird looked about the same size as a nearby Lesser Scaup,
although this bird's bill looked proportionately larger.
This is almost certainly the same bird found here early in January by
Rich Stallcup and at that time showed no traces of male plumage.