Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Howell, T.R.
1946
Cygnus columbianus
Dec. 14 Sacramento National Wildlife Refuge
elev. 100 ft, Glenn Co., Calif. Slightly over
30 individuals of this species were
seen on the Refuge, most of which
were in one flock. About 1/4 of these
were young birds in dingy grayish
plumage. The adults seem to have
a wash of yellowish or pinkish color
over the head and upper neck. I
could not make out the yellow spot
on the [illegible], but they were all at long
range. The call note is a distinctive
"hooting honk", deeper and altogether
different from that of a goose. They
take off from the water only with
some difficulty, as they paddle the
water with their feet like coots.
once aloft, flight is quite easy.