Gymnogyps californianus March 3, 1946 Hopper Canyon, Calif. I dont understand - perhaps a drink at a small observatory from w. side later showed a rock point in that vicinity. pool or trickles. No ravens or turkey vultures there so food doubtful. At 3:10, 13 perched at Big Cave area, all separate & guisant. Wind cold & about 20 mph from NW - sky 6/10 cumulus moving SE - I think the canyon well soon be fogged in. Went to Cave Point arriving at 3:35. At 3:35 saw 19 ravens at Big Cave area, 8 being immatures. One adult displayed at another standing very close & even put its foot on the head of the displayer. At 3:40 it commenced to snow lightly. I proceeded to North Point where at 4:10 I saw 7 ravens in air near Big Cave - 3 about 1,000' above it partially obscured by cloud bases. I reached road at North Creek at 5 pm & contin- ued on to Old Cabin on road. Saw car tracks & footprints of a man & boy near head of Hopper Basin. Strong cold wind continued on into the night. March 4, 1946 Hopper Canyon, Calif. Freezing during night. Wind died about 7:00 a.m. Sky clear. At 8 a.m. I was at Old Cabin. Saw at least 10 ravens at Big Cave. One was atop cliff, sunning back, wings outspread. One in shaded pothole to W. of Cave. Others in sun on Whitewash Ledge. At 8:15 I left