Gymnogyps californianus June 13, 1946 Hopper Canyon, Calif. unmolested through the night. No vulture or other birds were at or near the carcass. I did not visit the carcass for fear of disturbing the condors. I saw some on the high trees of Arundell Ridge. 6 a.m., 3 were sunning, 2 facing sun and 1 away. All were in sunshine, only 1 crushed flat. About half the birds were in top ¼ of the tree - possibly climbed this morning. The 2 or 3 birds highest on slope were immatures. One The only tree with 2 birds held 2 adults - this was about 300 yds. N. of carcass; an adjacent tree held an imm. 15' above higher adult. Apparently adults have no objection to imm. roosting or perching at above them or at higher levels - immatures tend to perch & roost lower but whether from poor flying or incitation. 6:15, the two adults in 1 tree spread wings & sunned facing the sun, tails spread, backs straight & vertical. Wings (Plan) from rear & curving straight forward . 6:18, one relaxed wings to half spread & preened below, then spread fully again. Wings actually held a little beyond vertical, thus : . 6:29 upper adult turned about & sunned back; 6:20½, lower folded wings. Upper relaxed wings gradually as it preened below (6:22) - until wings folded.