Banks 1960 Podopogone bicolor June 18 Sparho Lake, 4530 ft., Deschutes Co., Oregon - It appears that this species here is just in the early stages of nesting. I collected one far pair which I observed in a chase, presumably sexual. The pair repeatedly made sallies out from and back to a dead tree, in which there was a hole about 20 ft. up. As soon as I shot this bird, the branch upon which he and her mate had been sitting was occupied by a pair of Mt. Blindwings. Could these be competition for old holes? Another pair of tree swallows was seen at a dead tree, playing around a hole obviously too small for them to enter. The species is very common along this chain of lakes from Todd L. to Elk Lake.