Cogswell 1950 Colymbus caspicus June 16 5350 ft. 1 mi. SW Emigrant Gap, Placer Co., Calif. - 1 adult on 1/4 x 1/8 mi. reservoir which is skimpily bordered by sedges. June 27 Little Washoe Lake, 5020 ft. Washoe Co., Nevada - 2+ pairs seen on this 30-acre lake, which has abundant aquatic flora, scattered patches of tules, and presumably many small fish. Several miles of marshy land lie between this lake & Big Washoe, probably providing good nesting habitat, but we had no time to explore. July 12 about 70 adults on the N. end of the lake, many of them on or near the 30+ mostly NESTS which were floating in an area of Polygonum amphibium in 4-5 ft. deep water. The nests here were made of the same plant wound around in a small dome which barely protruded above the surface, a few nests in nearby Scirpus stand were made of that. All nests seen closely (6+) held eggs which the adults covered with wet Polygonum when leaving them about as I approached some 50-60 ft. away. July 26 50+ ads. sat. on N. end of lake (which, however, was not visited this trip, so nests not checked). Aug. 7 E side Boca Res. 5560 ft. Nevada & Calif. - 1 on large reservoir, diving occasionally. None here on prairie visits. Aug. 9 Little Washoe L. [see above] - about 50 ads & 20+ small young seen on weed filled lake. Aug. 23 Still numerous. Many downy young 1/2 grown young.