Cogswell 1950 Turdus migratorius 2 June 30 Big Bend Camp Grd., 5800 ft., on S. Fork Yuba R., Placer Co., Calif. Several pair seen; 10 with fledglings responding immedi- ately to a whistled owl call + resulting in a mob of several species about a group of 8 people. same result in p.m. with 12 people present, all of them seated quietly in white fir-Jeffrey pine forest. July 2 Sugar Bowl Lodge, 7000 ft. - NEST on E. end contains young. July 7 N. side Bear Valley, 4985 ft.; Nevada Co., Calif - many seen, 1 group of several fledglings on ground under dense incense cedars at border of large grassy meadow. July 8 Cisco Grove, 5650 ft. (see p.1) - a fresh family of fledglings. July 17 Sugar Bowl Lodge [see above] - a new NEST, situated in 7 ft. high crotch of 12 ft." lodgepole pine and very much in open, now contains 4 small young. July 20 Sugar Bowl Lodge to Sugar Bowl, .3 mi distant upslope About 30 encountered on 2 hr. walk starting at early dawn (7:50 a.m. POST); included were about 8 singing birds, though singing is less persistent than 3 weeks ago; also several fledglings. 1/3 of time spent in dense forest. July 23 Greel Peak - Joe's Sister saddle, 10,200 ft. Carson Range, Eldorado Co., Calif. - 4 in zone of stunted whitebark pines at timberline; there is no meadow nearby, altho a few snowbrushes remain on nearby fell-fields. late July} early Aug.) Sugar Bowl Lodge vic. [see above] - Fledglings now found everywhere about buildings, forest -> streocase meadow edge, etc. Much diminution of song, altho, Aug. 8 a new nest with young in it, in young pine by chalet window. Aug. 14 These young now fledged. No songs from any adults now.