Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Gymnogyps californianus
April 9, 1946 Hopper Canyon, Calif.
Arundell Ridge. With telescope I saw 3 on this tree + 1 on Flat
Ro., 100' away. One of the 3 took off- the branch shook
violently & other bird on that branch raised & flapped
wings to balance. 8:38I saw 14 total- 12 scattered
from SE Canyon to Spring Meadow + 2 perched on
Arundell Ridge. One circled 300' over old horse carcass.
8:41 one adult flap glided up the canyon to near North
Creek, then flap circled using 4-12 flaps consec-
utively, rising with the flaps, then gliding, the net
result being an altitude gain. 8:45, I saw an adult
atop a point 100' yds. S. of the horse carcass. This
bird held wings up V as if about to take off. It then
flopped down near the horse. I caused some disturbance
then breaking brush & getting telescope ready for observation
of that area. 8:53 saw an adult on the point S. of horse
again & a few seconds later it was gone. It is probable
that both yesterday & today my presence, even at a dist-
ance, prevented condors from feeding on this carcass.
saw 2 condors & 3 turkey vultures circling over White Cliffs,
3 circling over Old Colin, 3 over Big Meadow, 1 over Spring
Canyon Meadow, 2 over Arundell Ridge. 9:00, saw 7 scatt-
ered from our horse carcass to Old Colin. Two were very
ragged having gaps in secondaries on both sides & at least
1 primary on both sides ('6 or more). 9:07, one circled above
#1 nest, 2 over N. Rim, 2 over Big Meadow, 2 perched (one
on Flat Ro., one on higher Ro. 100' away), 1 near Hopper