Gymnoyps californicus March 21, 1946 Hopper Canyon, Calif. Walked from head of Hopper Canyon to North Point and down slope to Cave Point arriving 10:25 a.m. with Al Wool. At 9:00 we were 1/4 +/- mile N. of North Point & saw one adult (with # 5 primary missing from each wing, a near center rectry missing, & a notch in inner left secondaries) circling over the ridge at NE of North Point. This bird passed 300' above us then glided to vicinity of #1 nest camp, circled into st stories, then glided N. over the rim toward Agua Blanca watershed, never pausing although passing nearly over the old horse carcass. Maybe this was a #12 nest adult. There was a cloud layer with bottom at about 4000' level - it had risen up the canyon from a foglike lower layer. We could spot no perched cormors from Cave Point but saw one soar circle & rise from vicinity of #11 nest at about 10:30 - this bird rose over Arundell Ridge into cloud base. It had #5 left primary missing - no other apparent feather gaps. At 10:50 this adult soared down & alighted on top limb of a dead Ro. about 300 yds. W. of #11 nest cave. The bird perched there & at 11:04 took off, circled & rose over Arundell Ridge to 300+ ft. altitude, then glided toward Big Cave direction (11:11). A red-tailed hawk soared & dove above Arundell Ridge but no interaction with the