Cogswell 1950 Accipiter striatus Aug. 10 "Crow's Nest" peak, 7400 ft., 2 mi. SW Donner Pass, Placer Co. Calif.- In early p.m. I flew from its perch on the outer limb of a scraggly fir - circled round the rocky peak, then soared out on breeze blowing up over the cliffs S of the peak, disappearing eventually on beyond them over the valley of Onion Cr. Aug. 14 near Sugar Bowl Lodge, 7000 ft., 1.2 mi. SS W Donner Pass. I flew along edge of red fir - silver pine forest, It was in gray plumage of adult. Aug. 16 I circling high over Disney Mt. (just E of "Crow's Nest") together with 2 sparrow hawks which made a fine size criterion at this extreme range of ½ mile, I was using 9x binoculars to watch the 3 hawks "play" in the breeze which was apparently quite suitable for easy buoyant flight.