Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
California Condor
Eben McMillan
25 JUNE 1964
quite old. On one boulder that stands at the entrance
to Nest No. 5 Cave a print of the pad and two of the
foes of a Condor were left here on the top surface of
this boulder by a Condor having stepped in fresh
excrement just before hopping onto this boulder. This
white stain was easily scraped away so could not
have been many months old. A pair of Canyon Wren
had built their nest in a crevice in the top of the Condor
Cave of Nest No. 5 and today this nest contained several
well developed young.
From all the evidence we could gather, after having spent
30 minutes in Nest No. 5 Cave, we concluded that very
probably, a Condor egg was abandoned at this nest this
spring. Woodrats, that had carried ample supplies of acorns
into the back recesses of this cave, would in time, have cleaned
up all fragments of egg shell remaining on the surface of the
nest sand. Woodrats would probably break any large egg left
unguarded in this cave for any length of time.
We left the Cave of Nest No. 5 about 11:00 A.M. The sun
had not at this time reached the entrance to Nest No. 5
Cave although it would probably do so about 2:30 P.M.
No wind blew at the entrance to the cave although a good
breeze was blowing when we arrived in the saddle below
Whiteacre Peak to the Northwest. I would think afternoon
temperatures in mid-summer, in the area where Nest No. 5 is
located could get oppressively warm. Probably in the nest cave
it would not get so warm. I think the sun would shine in-