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 January 1964
The East wind roared throughout the night. Screech owl were heard
calling in the early morning hours. It remained cold.
At 7:45 A.m. Two Raven flew Northward and circled above our camp. At
8:03 4.m. one adult Golden Eagle circled high above the east face of
Hopper Mountain.
At 8:30 A.m. one adult condor was observed sitting, or floating, on
updraft of wind just North of crest of Rocky ridge to the North of
our camp. This bird faced into this strong current and held its wings
visibly motionless as it drifted slowly up, then down slightly, or to the
left or right sideways, all motions being very slow. It would also
drift upwards and backwards at the same time, or upwards and forward
with seemingly total control of direction and movement at all times. At
no time did I see this bird appear to be out of balance or buffeted
in any way. As this hovering on the wind went on the condor slowly
drifted North and West, upward, following the crest of the ridge
that forms the North boundary of Sulpher creek and rises to the Northwest
where it forms the North end of Hopper Mountain. After drifting up this ridge,
always facing into the wind and never circling around, this condor finally
ended up hovering on the wind above the top of the North end of
Hopper Mountain. After remaining above North Hopper Mountain for
several minutes, in an apparent motionless position, this condor drifted
castward, downward, then Southward, in a big sweep, all the while facing
outward into the wind until it had swung with the wind, at which
time it turned Southward and raced away on the wind and
passed from sight behind the hill, or the South end of Hopper Mountain,
at 8:36 A.m. see diagram on next page.