Gymnogyps californianus March 3, 1946 Hopper Canyon, Calif. about ¼ mile. Found a boltnail track in the canyon bottom where I had never been - one of Walt's friends or a C & G S man? 12:38, from junction of Carda Creek with main Hopper Creek, saw one 1500 t' overhead going toward Big Cave area and at 12:40 12:5 an adult 1000 t' overhead heading for East Canyon. Breeze still strong & soaring conditions apparently very good. Found two fresh primar- is below Arundell Cliffs & one near #9 nest cave near Carda Falls. Checked in this cave again as at 1:30 I saw an adult fly down the canyon there - apparently there had been no recent carda visitations. Bone fragments in #2 nest indicates that it has been used at least once since my last visit (1941 probably) - but the whitewash & smell did not seem to indicate use last year. There were two adult feathers but no down in the cave. I was searching from near Carda Falls when at 2:05 I saw an adult spiral-ing go down, feet down, over East Cliffs. It landed - apparently in the brush - at about 2:06. I watched, & one left that spot at 2:17 and landed in a cave in a talusf on the ridge at 5. side of mouth of East Canyon and about 5/8 of the way up from creek to top