Falco rusticolus #66K O. lammergeyeri R. 30 June Colville R., ca. 5 mi above mouth of [illegible] Flieshed a smallish dark grey falcon from the bluff on right side of river. where I received peregrine talons in '52. Collected a number of pellets. Looked for avie but saw none at that time. Later as we were setting up, creep a white-headed, white-necked juvenal tiwrel appeared, and soon after I saw a clemmy young on a ledge of the cliff. Cliff is sandstone outcrop ca 60 ft high on a slight talus overgrown with brush. Avie is near the top and faces NW - almost exact spot where peregrines nested in '52. Falcon is in molt - inner primaries gone. 1 July Climbed down to the avie. It consists of a shelf ca 24" wide by 18" deep - one straight wall of sandstone covered with red, green crustose lichens - about 20 ft from top to 40 from bottom. There were 3 eggs - about 2 weeks old - pin feathers on tail & wings about 1 inch out. Two were large - upper- shaps not a falcon - and one much smaller but not much younger - perhaps 2 clays. There were no remains of 2 longfress in nest - nothing else identifable. Took some pellets. The 2 large eggs were taken. The tiwrel at this avie is the lightest I've seen yet in Alaska. The pellets about various piches contained mostly ptarmigan feathers in white plumes. I must say the cliff looks awful.