Gymnogyps californianus March 17, 1946 Hopper Canyon, Calif. from road, 42 in separate dead bs. near foot of Water Tank trail near Rock Ridge. We picked a spot in Big Meadow for building a blind from which to photo & watch vanda visit. At 8- about 9 a.m. all the birds as before. We drove to Pete Ligan's, then back on rim. At 10 a.m. saw that bird in Parking Canyon & on Armidell Ridge were gone. None visible in Big Cave area. At 10:05 saw one gliding SE S. about 300' above Rim near Old Cabin. Arrived at camp at head of canyon about 10:25. Air calm & hazy up to then - a light breeze commenced. Waked at camp, then hiked to top of Big Cave - seeing no vanders on the way - and entered blind at 12:30 with T. Wake. By 4:30 p.m. no vandors were seen or heard in Big Cave area. 60° F. in blind, light breeze. Left blind at 5 p.m. - no candors in sight. Met Al Wool & Harold Hill. They had been down East Canyon, then down Hopper Canyon and up Water Tank Canyon, then back to foot of East Canyon (where camped), then up Hopper Creek to past #11 nest and #1 nest to head of Hopper Canyon. They saw a vander near #11 nest, 2 or 3 others perched in trees on Armidell Ridge, and one in a pottle near North Point which acted as if it had an egg in the hole. They