Gymnogyps californianus April 24, 1946 Big Pine Lookout, Calif. approaching about 1/4 mile S. of the cliff point 1+ mile E. This bird had feet down - it spiraled down sharply, with wings flexed, twisting to one side then the other by bending the wing tip down (something like plane maneuver called the "falling leaf") and swooped up to a landing on a prominent whitewashed point about 100' below the highest cliff point (landed 7:18). Fair NE wind still, sky 1/6 cumulus, increasing haze. The adult occasionally preened. It stood quietly facing the cliff. Same at 4:45. 4:44, adult turned back, wings horizontal + tail spread. Back to sun. 4:46, wings folded again. 7:48, the adult took off & descended very rapidly with wings flexed & feet down, occa- sionally dipping wings, & at 7:50 disappeared be- hind a ridge about 1/2 mile SE and 800 ft. below the lookout level as if to land - this canyon not visi- ble from lookout. At 5 p.m. I left the lookout & went to head of canyon where the vander disappeared - there were 3+ whitewashed perch points on cliffs down this canyon but I could see no vander. Returned to the lookout. April 25, 1946 Falls Canyon, Calif. At 5:25 a.m. I left Big Pine Lookout to hike to Falls Canyon. Fair E. wind, moderate temperature, & clear sky - warmer & less windy than yesterday. I reached the big pines at head of Falls Canyon at 7:40