One Erismatu-ra-jamaicensis tried hard to escape by swimming almost entirely under water; when it came to the surface it simply exposed the top of its head. I saw two or three hundred sandpipers, flying back and forth between the slough north of San Leandro Slough and Melrose Slough. A large flock flew over towards San Leandro Slough. Squatarola squatarola. A good many passed back and forth from the above-mentioned sloughs. Outside Bay Farm Island bridge the following were seen:- Chromophorus occidentalis. 3 or 4. Greebes. A few, probably Colymbus auritus and Colymbus migratorius. Loons. 2 or 3. Gulls. Quite a few large gulls. Shot an immature Larus delawarensis on the sand. Larus philadelphia. Common. This bird frequents the mud & sand flats at low tide. They live on