2962 Gymnogyps californianus March 22, 1946 Hopper Canyon, G.I.F. up from over Sandstone Mesa. 9:48, 5 visible over Rim at head of Hopper Canyon - 2 left near White acre Pk. at 9:53. One of the 5 peeled off & descend- ed into the Pine drainage in direction of Whitaker Pk. 9:55- 3 cardors circling 500 ± ' above Whiteacre Pk.. abt Occasional light breeze; 50° F. 10:00- 3 over Whiteacre Pk. still, circling aimlessly. Followed one about 2 miles E., another 2 miles W. of the peak. At 10:10 picked up one N. of White Point coming up from below Rim level. It circled & rose, soared halfway to North Point, circled working back over the horse carcass, then glided W. over the Rim at Small Mdr. Pass at 50 ±' alitute. 10:23, 2 cardors circling at 300' over Rim for NE of Nuth Slope. 54° The two glided into Hopper Canyon & descended, fast down, toward Crundell Ridge, at least we disappearing behind the ridge as if to slight about 10:28. 10:45, saw one circling over Old Cabin, apparently having come from N. It rose to 1000 ±' & then headed N. again. 10:55, there were 2 turkey vultures flying & perching above #/2 nest. a condor adult alighted on cliff edge above the nest (10:55). At 10:57 it took off & alighted 100 ±' to N. & 300' lower down on a small point, flushing a turkey vulture from the spot. 10:58 the condor took off & perched