Gymnogyps californianus June 30, 1946 Nr. Castle Mtn., G.I.F. digger pine (many dead branches) about 500' below level of ridge top + 3/8 mile N. of ridge about 2 miles to E. of Castle mtn. (summit). At 7 a.m. I was on a sandstone point at cliff top above two bluffs, & I saw 2 others in separate digger pines. There are hundreds of these trees scattered in arrayo [illegible], interspersed with the chaparral or juniper, but they do not appear nearly as good as deal pine or big cone pines as roosts. Of the 3 in one tree, two were in the green leaves on top & one on a two-liffters branch 15' below on the 60' high tree. The bluffs line extend for about 2 miles, E.+W., & are somewhat similar to those on S. side of Big Pine Mtn. (the smaller & more broken). On the point where I sat were several condor-like whitewash splatches & one small condor feather. There were 3 duch howlers "playing" in my vicinity. At 7:30 one near-adult child & 1/2 was rapidly about 200 yds. N. of the bluffs. It paid no attention to me but sped E., 300' above the bluffs. One of the roosters was gone (alone in tree), but apparently 4 in tree which had 3, 4? adult across the canyon about 300 yds. from them. These roost trees were not highest on ridge but allowed takeoff down the slope or canyon. Some bare branches seemed whitened as if from perching. At 7:35, 3 of the 4 in one tree took off (at a time), & slid descent