California condor survey field notes, v1477
Page 407
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
California Condor Ebon McMILLAN 11 May 1964 Young Condor was seen to make a dive towards the raven which the raven thwarted with little effort and continued to follow the Young Condor. Upon coming above a draw where three Turkey Vultures were circling low over the Dale tops the Young Condor dropped down and went out of sight somewhere in this draw that is one of the far southeast drainages of the Canyon that dumps out on Chalame flats southeast of the foot of Kerr Grade about 5/8 of a mile. The Young Condor went out of sight, into this draw, at 11:36 A.M. At 11:43 A.M. a young Condor was seen to circle above the horizon above the area where we had gone out of sight at 11:36. This Condor circled with several Turkey Vultures above the ridgetop here for several minutes appearing at times as though it would drop down again but after several passes over the area it went up higher and then headed Southeast in a flat glide at 12:06 P.M. and was soon lost from sight still going in this same direction. At 1:50 P.M. An adult Condor with 5th Primary missing from right wing and a gap in primaries of left wing came in from the North on flexed wings and very high, passing directly over where I lay on my back, eating my lunch, on hillside 1/4 mile south of foot of Kerr Grade. As it came overhead this bird down slowed considerably in speed, and where it did not deviate from a straight course, it appeared to be floating over air waves that would cause it to trim its sails when dropping into troughs and spreading out for more surface when meeting the uphill side of these waves. The wing action did not include wrist motion as is the-