Gymnogyps californianus May 30, 1946 N. Mt. Poso, Cal.f. aevis at 11:45. The gunmen among feeding raptors is bad - we can't protect all feeding areas from such. I hiked N. from the road and was about 3/8 (at 12:02) mile N. of it when I saw two adult raptors about 1/4 mile to W. of me circling over a ridge. The birds drafted downward in the circling wind until at the N. slope of ridge just S. of Little Creek. Then they circled & rose. Another adult appeared & circled above them, then when at 400' altitude glided E (at 12:06). At 12:07 the lower two were gliding E. too - over Little Creek. Retrogressing - shortly after seen first, one of this pair chased the other briefly. (Apparently minatures don't do this). I could identify none of these as birds I had seen earlier today tho didn't have too good a view. The pair glided to the E. end of the ridge (about 2 miles), then circled & rose until at about 2000' altitude, one 300' above the other. Then at 12:16 one headed W. & passed nearly over me. It gave one slow "dip" increase & accelerated much in horizontal velocity for several seconds thereafter. The bird was in a flyglide of course. It veered to NW, & then I saw another (of the pair probably) following 1/4 mile be- hind & 300' below. They continued on to NW until at least 2 miles from me (12:22 - estimated 3 miles in 6 minutes = 30 m.p.h.), then descended