Gymnogyps californianus April 3, 1946 San Diego (zoo), Cal. ficker. Sometimes the ventral cervical apterinum was visible as a continuous bare area from neck to "crop" area. Crop patch nearly white in these birds. The imm. was evidently the poorest flier of the 3 & 4 black branches of the Gymnogyps growing in the cage when landing. The ? adult made many circuits of the cage as described but ? & imm. flew down to the lower perches & pool edge without soaring around the corner as the ? adult did. Back & upper wing covert feathers were much blacker in adults of Vultur than in Gymnogyps. Tails were spread wide when landing. Neck color of imm. dark like Gymno- gyps though down neck fuzzy brownish & lighter gray. Size of imm. similar to Gymnogyps though head shape different - bill, especially the lower mandible, larger than G. & "double chin" quite pronounced ( ). Neck seemed to be longer than G. but this appearance may be due to lack of the hackle ruff. Preying similar to G. I saw one adult scrape the side of its head on the rock as if to scratch. Adult ? drank, wading into 4 +" of water & lifting each head up after each dip as if to look about. V. seems broader across the back than G. - perhaps because they