Gymnogyps californianus March 15, 1946 Hopper Canyon, Calif. about 5 minutes. The flight made a rushing rather than a singing sound. Both seemed to have a bulging button in the crop area & a few light (down?) feathers protruding from sternum behind this bulge. All quiet by about 11:25. No condors at Big Cave area by 12:30. Retrogressing - the imm. which circled over me with feet down at one point raised the right leg & scratched 3+ times at head or neck, all quite slowly. At 2:45 p.m. an imm. alighted on Whitewash Lodge & an adult 2 minutes later. The imm. was a fuzzy headed one with crop patch bulging, & appeared like the one I saw perched at about same spot around 11 a.m. today. The adult was 20' above imm... Adult preened. Pecked at a short feather between its feet until feather fell off cliff. There was a fair E. wind flapping my tent blind constantly. Adult had a rosy color on sides of neck from ear down - distinct contrast from range of the vestrum. Wind veil did not show the rosy hue. Back of neck was dull grayish orange. Between the rosy sides & magenta ventral neck spot was a light grey area.. This adult seemed to wrangle have crosswise crease lines or lack of shed & necks & a wart (?) left of center on hind neck. There were scattered black feathers in crow