Gymnogyps californianus March 18, 1946 Hopper Canyon, CA 1700 E. into Hopper Canyon. Breeze was fan fans. Sun breaking thru cumulo-status clouds occassionally. At 1:10 saw one adult perched on limb of the dead P.O. nearest road just W. of Parking Knoll. We walked down the road toward the bird. It put head & bill down near feet, ruff up. As we passed behind the bird, it turned around slowly. Scratched head with right foot. We took a few photos for about 3 minutes from about - 75' from the adult, then the bird turned around & took off down the canyon. We then went to Old Calvin and down to Spring Canyon Mdw. to observe the hole where Nell & Wool saw a cardor yesterday. This hole was about 2' high & ∩-shaped located about halfway up a 60' high sheer W. facing cliff about 100 yds. N. of North Point (about 40' below highest top of bluff there). This cave is easily watchable from B Spring Canyon Mdw. After There was a dark spot in the cave which may have been a cardor or an egg (2:10 p.m.) At 2:10 saw three cardors fly ing about the trees on Arndell Ridge. 2:38, we whistled & shouted & the adult in #12 nest came to cave entrance. The bird stood facing down canyon, then up, & at about 2:44 walked back into the hole & again hole appeared as sketched above. 2:45, saw 3 cardors over Arundell Ridge. Cumulo - status clouds