Gymnogyps californianus June 5, 1946 Whiteacre Pk., Calif. level for about 1 mile (2:26). Then fell off to S. again until about over Rim, then N. again (all very slowly) to about 1/4 mile NW of me, then S. again over the Rim about 1 mile, then broke N. toward me at lower level & about 100' above me at 2:33. In heading N., right side of tail depressed (rudder effect). When bird turned W. into wind, it rose rapidly. This bird and other seen this morning - has no apparent "crop lodge". Adult went back & forth 1/4± mile just over S. of me again, then tacked about 1 1/2 mile S. (2:38) & returned N. (2:40, 300' yds. W. & 200' above me atop Whiteacre Pk.). Then back & forth 2 or 3 more times, then S. just W. of & above the Rim - on and on - until apparently again over E. slope of Kopper Mtn. at about 4200' level, 3:05; I again saw an adult soaring near the cliff's 1/2± mile to S. of me, & a few minutes later (3:06) saw one adult perched on the point where I first saw another this morning, for- ing on [illegible]. About 3:35 this bird faced S. on the same rock point. SW breeze continued, but cooler, & slightly 1/10 cirro-stratus; 3:39, [illegible] again, facing in from cliff. About 3:55 the adult faced N. on its point. 4:03, for- ing W. - "just looking around" the main occupation; occa- sional preening. 4:08, an adult soared S. about 100' from me & joined another which circled & rose just W. of the cliff's about 1 1/2 miles to S.. The perched adult seemed somewhat interested & faced E. Breeze died to