California condor survey field notes, v1476
Page 385
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
California Condor Eben McMillan 9. September 1963 earlier and had flown around the ridge to the south - while the Condor that flew around the ridge and lit in the pine to the Northward probably gained less than 50 feet in elevation in the exchange of perches from the Oak to the pine - this last bird that flew out to the South gained three or four hundred feet in elevation in its exchange of Perches; and this must have been accomplished with little or no circling for both Jan and I saw no more of this bird after it disappeared from sight behind the hill To the South and would have been forced to return into our field of vision had it done any circling. At 9:00 A.M. Buzzards commenced to leave their Perches and fly out westward and circle over the flats west of the Farnsworth ranch buildings. Seven Condor were perched in trees in the general area at 9:00 A.M., at least two of which were young birds, one a ring-neck and the other a blackheaded bird. ONE of the Seven Condor above mentioned was perched in bent pine. At 9:20 A.M. Another Condor came in high, then let down by dipping the point of one wing and sideslipped in and lit on bent pine above an other bird that was perched. As this Condor flapped to light on tree the roosting Condor left, circled once then realighted on branch in center of tree. At 9:30 A.M. a Condor that had been perched in a dead pine on the horizon, to the Southeast, stood up from a sitting position it had held for the last half hour, on a small branch that looked to be no bigger than a one inch pipe - See diagram below for posture of this Condor while sitting. sitting posture Tree & branches