ford 2874 Gymnogyps californianus February 11, 1946 Hopper Canyon, Cal. f. windy & still some roost shifting. 30°F at 5:20. Two left cliff top for lower perch on rocks - direct route, no circling. 5:25 one on tip top of Roast Tree. I left because of the cold & drove to upper Pale Canyon to camp. Strong cold wind continued; snowing on Cablestone Mtn. February 12, 1946 Hopper Canyon, Cal. f. sky clear, light W. breeze. 32° at 7:10 am at Pyr- amid LOLO. At 7:10 I saw 25 condors at Big Cave, 4 being in top of Roast Tree offors, 3 in pot- holes W. of the cave & the rest on Whitewashed Ledge near it - the ledge appeared: None apparent atop the ciff or at the drinking pool. At 7:15 saw one flap from Ledge as if shifting perch. Two (1 in pothole, one on tree branch) seemed flattened in the roosting position, the others standing. The lone bird beyond Rock Ridge was still there - about 3' from where seen last evening. No snow fell in Hopper Basin last night - some on ridge W. of Cablestone Mtn. though. Air dry. 7:25, four (3a + adults) flocks glided straight down Cardon Canyon below Big Cave & disappeared behind (cliff side of) Arnold Cliffs.