Gymnogyps californianus March 15/1946 Hopper Canyon Calif. out. A seventh circling over E. slope of Hopper Mtn. tops. 10:01 - now 2 over Hopper Mtn., 2 over Pyramid lookout, 4 2 (1000± high) over Old Cabin. 11:03 - the Pyramid 10 pair heading toward Hopper Mtn. - 5 total scattered from Hopper Mtn. to Parking Place; apparently searching rather than making a B-line for known food supply. Fresh SE breeze. 10:06, two adults without crop lodge circled 4 rose 100± yds. W. of me. One had notch in center of secondaries of both wings or and other a missing #4 left primary. The ruff seems always to be in same condition in flight - that is up to the head. The long neck does not show (drawing of bird head) 10:11, the pair now 500± directly above me, circling at same level 4 30± yds. apart maximum. 3 still over the Flat Nump area of South Ridge. 10:13, the above gave 2 over E. Rim SE of Big Cave. pair gave. I headed for Big Cave again. An immature left Big Cave area 4 soared down Conder Canyon - wings curved — — , tail tilted much. Then 2 adults lift that area 4 circled below Big Cave for 5± min. utes - one had #4 left primary missing. At 10:30 I was at the pool area atop Big Cave. There were many new tracks to about 30' back from cliff edge, then flew. First water was a pool in sand about 95' back from falls brink. Only 2 or 3 corduroy led to it - more birds may have app- roached over rocks however, but told still very