Gymnogyps californianus April 13/46 Hopper Canyon, G/lk posterior to dorsally behind the occiput the skin is pink, not orange - this pink area extends around the sides of the neck behind the ears. Bright magenta patch topped by light gray above front of ruff. The magenta patch bulges more than rest of the neck as if thinner skin. There was much pecking, head wrestling, & snapping between imm- atures & occasionally adults. In general there was no animosity between adults & immatures at the pool, however. They cleared about 4:45, at 5:10 there was a gust of east wind which could the tent blind to flop violently, at 5:15 all the cardors left the pool area, a few at a time, & other birds left the cliffs so that only 5 remained visible. This was last use of the pool area today. Perhaps the blind move- ment frightened the birds. At 5:20 I counted 13 perched; at 5:25, 24 (11 immatures); at 5:35, 26 (12 immatures) perched about the Big Cave area (on cliffs N. of Big Cave as I could not view Roost Tree or cliffs W. of the cave), 5:40, I saw 13 on Whitewash ledge & 6 atop cliff above it. Quiescence much greater than before 5:15 but still occasional shifts, at 5:50 the sunset line crossed cliff top - there were still 6 scattered atop cliff & 15 on whitewash