Gymnogyps californianus April 9, 1946 Hopper Canyon, Calif. Mtn. (8 total). 9:10, one step higher Ps. did w/d low & took off. One gone from Flat Ps. to (I believe) the high Ps. It worked over to other, flapping (imm. to adult?). 9:13 the last one took off from Arundell Ridge - none reached. One adult skimmed by 100+ from me. 9:15, saw 1 in dead Ps. at head of Parking Canyon - stayed at least ½ hr.. 9:20, 1 circling over N. Pt., 1 in head of Pyramid Canyon, 1 over White Cliff. 9:23, 3 over Old Colin & 2 over E. end of Arundell Ridge. 62° F. 9:27, the 3 were 100+ over me. One was a near adult with tip of #4 left primary missing; one an imm. with #3 primary out each wing; one an imm. with large gap in left secondaries. These decreased to 2 & circled within ½ mile of me until 9:39. 9:40, 1 adult circling over White Point. 9:45, on imm. circled close over me (#3 left sec primary put). 10:06, 2 over Old Colin. 10:08, 1 adult close over me. 10:27, 2 adults soared 100+ over me, then toward N. Pt., then circled back toward me & flew glided W., each giving one dips while wings flexed. 10:40, 2 adults over me without pausing to circle - one had gaps close to body on right side. These came from White Point area & I saw a third flapping - flapping from that direction. Light breeze, sky 3/10 cirrus, 66° F. 10:55, saw 2 about 300+ over Old Colin; they flew glided W. into Deep Damage. From 11:18 to 12:53 I witnessed an episode of "house hunting". At 11:18 I saw 1 adult alight in a small