Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
California Condor.
Eben McMillan
15 may 1964
land bird and the wrist motion of a Golden Eagle is mostly
restricted to the outer one-quarter of the wing. See following
diagram.
[illegible]
wrist motion of Golden Eagle
Where the wrist motion of a Condor will include at
times the outer half of the wing - See following diagram
[illegible]
wrist motion of California Condor.
The second feature one can use in identifying Condor
from other large birds in flight, at a distance must be
used when the bird is either approaching or going from
the observer. It is then that the brush appearance of
the outer primaries of the wings give the Condor an
unmistakable appearance. See diagrams following.
[illegible]
Brush appearance of Condor wings at distance.
[illegible]
Lack of brush appearance of Golden Eagle when seen at a distance.
The Tail of the above Golden Eagle is too low and too wide,
nevertheless it shows the important feature of lack of brush
appearance of outer tips of wings at a distance.
At 11:30 A.M. I drove to Cholame flats, passing up the main
valley roadway to Cattleguard where the roadway is fenced on each
side near the Cholame Rancho Headquarters. No Condor Nor Turkey
vultures were seen at this time. Six more Cows had died near
the Kerr Grade bottom since I was here last on May 11th, more
death Calves were also in evidence. I drove and parked at