J.G.Hall 1953 July 11 Sagehen Creek, 3 mi. NW Hobart Mills, Nevada Co., Calif. Pool at the trestle (over main stream) on way back. Found nest holes of Williamson's sapsucker & tree swallow in holes in a tall dead L'pole, 25' & 35' up respectively. The sapsuckers had large young judging by the cries coming from the hole. The swallow didn't actually enter its hole. Weather very hot but clear all after- oon. Left about 1:30 PM. I didn't take care to look for cuttings but superficial impression was that there had been little if any ad-ditional since my last visit. Lower Rockslide Colony 8:30 PM. While fishing I observed a beaver floating in the N. channel; it was getting pretty dark. July 12 Halfway between Spring Camp & Kilm Meadow 9 AM. Betty found a nest of Pil. warbler on the ground close to the stream in grassy meadow. It was under the pro-tection of an overhanging willow about 2" above the ground. There seemed to be two pairs in the immediate vicinity although