Gymnogyps californianus March 2, 1946 Hopper Canyon, Calif. 5:53, two flapped 6t across Big Cave & alighted in separate potholes on the N+ [illegible] cliff. The lowest visible perched (On cliff below Whitewash Ledge) also flew across to a pothole near there two. 5:55- sunset 10t min. ago. I saw me flapping can- dor alight on Whitewash Ledge. Apparently I arrived at the Rim after "roosting time" today as I have seen no condors above the horizon. 6:01- whitewash ledge appear- ed: X ? 6:03, still 3 atop Roost Tree, about as last diagrammed, the (last bird to alight on Whitewash Ledge) flapped (inked X) off. Lowest bird on Whitewash Ledge perched flat as if set for the night. Those on Roost Tree as before. Air very still now & cool (56°F.). 6:10, ceased observation because of darkness. March 3, 1946 Hopper Canyon, Calif. at 7:15 a.m. left camp at Old Cabin and proceeded down Spring Canyon to visit Greta's nest cave. Sky clear, temp. 70°F., gusts of strong W. breeze. The old trail was virtually gone beyond Spring Canyon Meadow but I found enough of it to make