Gymnogyps californianus March 3, 1946 Hopper Canyon, Calif. excrement on the egg. It lay about 4' inside the cave in good light (from NW) and was about 8" from the rear wall and 8" from SW wall. There was no depression in the floor litter - in fact, I collected 3+ bones within 3+ "of the egg, some touching it. The egg lay NE-SW, the NE end being longer & axis of cave being NW. I lifted the egg & felt it - it felt solid & heavy, but I could not candle it by daylight. I gathered about 15 bones & bone frag- ments hurriedly & left. At 11:25 I was going down the slope & flushed an adult from top of a green Pseudoturga about 150 yds. NW of the nest cave. The taking off flaps gave a loud "woosh woosh" sound - earlier in the day I could hear no sound from flap gliding flaps of close adult. This adult had no missing large feathers & crop did not ludge. The rock trough at entrance to nest cave & two points at cave mouth had conspicuous fresh whitewash. I walked downstream and at 11:48 again saw an adult circling over the nest cave area (call it #11 nest, or Beta II). This nest cave is poor for any but closeup photography as sun does not shine & in and one can see the egg from no point nearer than