Cogswell 1950 Chordeiles minor June 21 3:00 p.m. 6200 ft., 6 1/2 mi. W Donner Pass, Placer Co., Calif. - A ? was flushed from a "NEST", with 2 eggs, which was merely a slightly disturbed area on bare crum-bled granite amid irregular granite boulders on an old stream terrace 1/3 mi. S upslope from the S fork of Yuba River. The several acres surrounding the nest are of open lodgepole & Jeffrey Pine forest with patchy huckleberry oak, pine-mat manzanita, etc. a considerable bare ground. This is on a "knoll", with conifer forest on the lower areas around it. The eggs lie just outside the area under the canopy of a tall, lone Jeffrey Pine. When disturbed the first time, the bird flew off low above the bushes without a sound, evacuated the cloaca, once enroute, & disappeared beyond the pines eastward. In about 5 min. it (the same one?) was flying high over the pines & approached the nest area, only to veer away again. After we then moved away from the nest we saw no more of her until rechecking the nest about 4:10 p.m. She was on it then according to Denis Cogswell who scared her up again, but this time she only flew a few hundred feet and alighted length-wise on a lodgepole pine branch 1/2 way up an 80 ft. tree. Here George Treichel, Bob Frey, & I saw her well, noting the buffy throat. A few days later campers who went to photograph this bird found her still incubating.