Gymnogyps californianus July 20, 1946 Breckenridge Mtn., Calif. Tree. It is perhaps notable that the 2 immatures perched further up the canyon than adult, at higher elevation, & were much more active in moving. Some cattle are ranged in this area- I saw 3 Shryford's about 1/4 mile from adult. Sky 9/10 alto- stratus. 8:30, I saw that one imm. was perched flat on a lower branch of tree 200t yds. uphill from adult- it had only one left there about 7:30. Adult sunned self- in this morning when sun was out, but not since clouded up. Adult had a bit of down as a small feather sticking from its frontal feathers - this caused no apparent discomfort. 9:05, the imm. had moved to a 3' higher branch & stood facing E. (about 3 yr. imm.) 9:24, the imm. was again on its former branch & crouched flat. 9:44, diffused sunshine, faint breeze; the adult rose & stretched right wing down & somewhat forward so that it lined against perch branch- [illegible], then folded again. Clouds breaking up. 9:48, two imm. not standing in the upper tree, about 2+3 yr. old?, one 6' above other 4' 20' below tree tops. 9:59, the upper (2 yr.) down to same branch as other imm. 9:53, sunshine - adult sunned under side. The immatures stood with wings spread, nearly facing, & one several times snapped out at other with bill. Both about 3 yr. old - orange necks but black heads & poorly defined [illegible] bar. 9:56, adult sunned block, left wing tip on opposite side of trunk from body of bird. 9:38, occasional puff of fair breeze. One imm. took off