Gymnogyps californianus April 14, 1946 Hopper Canyon, Calif. 10 were in the open on Whitewash Ledge, thus: Several apparently had their heads tucked in so that they appeared head- less, but most appeared to be standing rather than crouched flat. at 50.m. I saw 3 fly from the ledges & at least 1 land - there was some shifting. I counted at least 12 on white- wash Ledge however, & at least 5 had heads tucked in. at least 3 were crouched flat with heads tucked in. at 6:30 there were only 3 on Whitewash Ledge. One adult perched on a point on our side of the pool & sun- ned its back. Two immatures waded & drank at 6:35, at 6:50 there were 9 atop the cliff in sun- shine & 3 still on shaded ledges. There was a fair breeze from E., 43°F., at 6:50. 6:54, one adult drank by wading at water surface for about 4 sec., then rais- ing up for about 5 sec. - took about 3 drinks this way. Clear sky today. 6:58 12 in ledges in shade, 2 min. at pool, 6 crows atop cliff (19 total). 7:02, 4 imm. in water at fast of pool, occasionally drinking, & an adult next to pool. "In between" her pink sides to rock posterior to ear - occipital black continued down neck in this region ear 7:08-8 atop cliff; 7 on ledges where roasted & most roasted last night. 7:09, an imm. gave 10 flaps in 4 seconds in shifting