Gymnogyps californianus July 23,1946 Hopper Canyon, CaliF. way up the trail. At 6 p.m. there were 2 in Near Root Tree & 2 in double-topped tree about 300yds. further damself. I went down & covered calf carcass to discourage sayotie. Saw one canda cross foot of Big Mdw. & circle law in South Canyon at about 5:20. at head of trail saw only 1 left in Near Root Trees - adult in the double topped one. Breeze light & sley nearly clear. Went to camp. Ed said that when he left the blind he kept trees between himself & the nearly perched cador & it did not flush until he was about 1/4 mile away. We discussed communication of food finding between birds - Ed said that when working with TRP in the Cuyama, he noted that when one cador found food the others quickly gathered in that vicinity. July 26,1946 At about 6:30 a.m. Ed N. was in the blind. I covered the calf which was already swarming with about 100 flies & wasps, was swollen, & stinking so that we noted adr 200 yards uphill. Coyotes had not molested the carcass. I went then to Pyramid Lookout, arriving 6:55 a.m. Saw no perched cador. In South Canyon noted I could see no whitened trees in- dicating little or no roosting there, but many whit- ened trees in the Big Meadow area - Near Root Trees of the dead Bandedtanges below the meadow. At 7 p.m. sley clear, light w. breeze, about 65° F. I saw