Limosa fedoa. One feeding with some dowitchers. Macrorhamphus griseus. Fairly common. No busts. Crenetes pusillus. Very common. Several sandpipers shot were of this species. No Least sandpipers encountered to know them. Pelidna alpina. Probably a score. Never more than four or five together. Nycticorax nycticorax. Several. Ardea herodias. Two or three. Fuligula marila. One scaup duck apparently of this species flew up from slough. Oedemia deglandi. Several. Two or three flying. Aequalus sempalmata and Pelidna alpina skinned had large testes. An Oedemia deglandi male, which I shot, had a grayish white iris. May 4, 1911. Alameda, bal. (Through slough to south side of Bay Farm Island and return.) Sterna forsteri. Fairly common. Fishing. Mostly fine black-capped individuals. Larus philadelphia. One or two in San Leandro Bay m morning. Large gulls. Several in San Leandro Bay and marsh. Shot an immature Larus delawarensis in slough. Off the south shore of Bay Farm Island there were quite a few, a dozen or so circling about high up. Apparently Larus californicus.