3 mi. W Payette Lake, 5400 ft., Adams Co., Idaho. July 3, 1932 near fallen timbers. Placed out 75 mouse, 2 gopher and 8 rat traps along the meadowland, near the creek, in the fir and spruce and on stumps in the timber. The country seems particularly good for microtines. Heard a number of Robins and 1 Killdeer this evening. July 4, 1932 The temperature was quite low during the night; frost seen on the ground until 7 a.m. Heard a pair of Horned Owls near camp at 3:30 a.m. A gopher was taken from the set near camp. The traps contained the following animals: 3 Zapus princeps, 2 Sorex, 4 Crotomys, 1 Phaeacomys, 2 Microtus ordox, and 1 Microtes sp.?. All except 2 young Crotomys were taken in the grassy land near the creek; one in open near fallen timber, others near firs, and others under alders. There was no noticeable differentiation of habitat. Two of the Red-backed mice were taken up in the fir belt. Miller noticed a Woodpecker's nest as we were going along the trap line. It was on a lower dead branch of a todge Pole. The height above the ground was approxim- ately 9 feet. The nest was about 2 feet from the trunk and was composed of moss, cottony material and plant fibers woven very compactly together. There were 3 eggs in it. One of the adults swooped down often snapping near Miller's head as he climbed up to look into the nest. Yesterday I forgot to mention that I shot a Chickadee (Poethetus gambeli) in order to make sure of the species here.