1941 Nov.12. Very foggy. Not cold. The Lady Birds went to Seawsville Lake via Dumbarton Bridge. By 11 a.m., the fog began to lift. (In the salt pools we found many Au-Sprites, Blue Herons, Rared Gulls and Bonaparte Gulls - the last two mixed together at some distance north. All three sandpipers were ab. near the road. Two Yellowlegs (Greater) were seen. Also many Willets, Pipits. (On the hills And Warblers, Crowned Sparrows (Pyctureis), Meadow. Larks, At the west end of the bridge with tidebbing the mud flats were well populated. We counted 41 Lb. Curlews. Many Godwits, 36 Plover Killdeer, Willets and the three Sandpipers. C.Rails were more ab. than I have seen since 1937. We went on to Seawsville Lake where we had lunch. The first pond was covered with Ring-necked Ducks, several hundred. A few Pintails (10-12) and Ruddies (12-15) were there. We found no real aggregation of land birds but found Songbirds, Black Oboeles, P.C. Kniflet, Yellow Vireo. Across from the farms grounds Mallards, Coots, a few Pintails. Mrs. Wellebrand reported an Osprey there last week. It plunged into the water and came up with a fish - No Swans or geese seen. We returned via Dumbarton and in addition 8 birds seen in the morning found several hundred White Pelicans soaring in the air - while in sun, disappearing in fog. Many of them seemed to be coming down in the Little Salt Ponds nears Alvarado.