Gymnogyps californianus April 21, 1946 adult & imm. I saw land near there earlier to- day. Now the birds appeared wet. They preened, beat their wings in the air 5+ times in suc- cession (5 times in 2 seconds), + sunned backs with wings spread. The imm. had 3 left pri- adult shook up its wings once. preening. Both were sunning backs at 11:48. 11:49, adult flopped to behind a bush, out of my sight. Imm. continued to sun (sunning at 11:55. This is my first evidence of both- ing at this location. The 2 brothers + 3 seen soaring = at least 5 total seen today. 12:05, the imm. gave 3+ flops, then sunned back & wings again, preen- ing underparts at same time. 12:15, the imm. preening at same perch. 12:35, still preening. Birds which spend so much time bathing & preening can hardly find food daily,- or be very hungry. 12:39, the imm. retired out of sight. No action seen then until 3:20 when an imm. crossed northward near foot of the canyon leading to Sulpher Pk. This imm. circled & slowly worked up the slope, going N., until about 1000' above the ridge (3:29)-then another (adult?) circled with it for 2+ minutes and one (the second #) headed NW in a long glide. The other soared 1+ mile W., then circling 200+' above the brush worked back toward Sulpher Pk.. at one time 5 turkey vultures circled within 200'