Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Cogswell
1950
Accipiter gentilis (?)
Aug. 17 Sugar Bowl Lodge, 6908 ft., 1.2 mi. SSW Donner Pass,
Placer Co., Calif. - A large accipiter in brown
plumage flew over the open ski slopes
& into forest SE of lodge. altho not
seen close enough to tell by plumage
or direct size judgment, my impression
was that it was well big enough for this
species. In 1948 we observed them
regularly here, & in 1949 messrs. Geo.
Tweedel and Maurice Richter found a
pair nesting near L. Van Norden about 2 mi.
w. of here. No cooperi have been en-
countered by any of our Audubon camp trips
above 5800 ft. (American River canyon, N. Fork)
Aug. 26 A similarly plumaged bird was seen
3 times as it flew out across the ski
slope near lower lift mechanism, returning
each time to detached clump of 60-70 ft.
high pines & firs just NE of it. This is
the area where many Sparrows & finches
have been feeding lately. A great
exodus of finches from there across
by the lodge 600+ ft away was probably
cased by a movement of the hawk.
We saw it catch nothing. It eventually
flew very low across the slope & under
the dense firs on steepes N facing slope
to SW.