Koford, R. 1975 Journal White Cloud campground, 4200 ft., 1/2 mi. E Nevada City (by r.) Nevada Co., Calif. 5 September. The trap runs ~NE along the hilltop. I finished checking the traps at 2030, but caught no squirrel. Tomorrow intend to set up a grid in this area to use as a second study area - one with a lower density of squirrels - for comparative purposes. Sky clear, wind light, temp. 70°F at 0800, 81°F at 1500, 70°F at 1930. 6 September. I spent 0730-1415, 1730-1935 in the second study area, putting in about 15 grid stakes. I didn't see any squirrels, but heard a short alarm call at 0930, a long one at 1100 about 200m W of the grid, and a short one at 1808. I found a ♂ dead in a trap 10 m. 305° P2 at 1400 - he apparently was exposed to the sunshine for too long. I started the grid at the western edge of the study area, with line 1 running E-W. The lines running N-S start with P at the W and proceed alphabetically as one goes E, with S1 being slightly E of the road, S2 being slightly W of it. The road runs roughly NE - SW and is bordered on the W by a strip of fairly continuous tree cover for ~100 m., then an area of widely spaced trees for another 100 m. before the slope begins. On the E, there is fairly continuous tree cover, with a gradually increasing slope. The first 100 m. or so should be useable. Sky clear, wind light, temp. 77°F at 1000, 86°F at 1400, 71°F at 1930. 7 September. I spent 0715-1340, 1630-1930 in the second study area, putting in several more grid stakes. No squirrel was caught or seen, but I heard short alarm calls at 0744 from near the area W of P4 and at 1324 near P2. Sky clear, wind light. Temp. 70°F at 0800, 82°F at 1340, 72°F at 1930.