32. Alameda to and from San Francisco, Cal. Conditions: Westerly wind; cool; clear. On the beach near the roundhouse this morning there were thirty or so gulls (apparently immature Larus californicus), and a dozen or so more came sailing in from the westward as the train passed. On the evening about the Ferry Bldg. in San Francisco, most of the birds were adult Larus occidentalis; very few Larus californicus being seen. On the roof of the first shed south off the Ferries there were a good many of the former species. June 10, 1908. San Leandro Bay, Alameda Co., Cal. Conditions: Overcast; cool; westerly wind; forenoon; tide high about 9:30 A. M. I went about half a mile up San Leandro Slough and then worked in the small sloughs between that and the old S.P.B.R.R. tracks looking for rails' and sparrows' nests, but found none, although Melospiza cinerea was very common. At the first glance one would mistake one for a black rail as it goes along the mud. and suddenly disappears under some small over- hanging bank. Of water birds I saw the following:- Sterna forsteri. Quite a few, some in full breeding plumage, others immature, etc. On mud bank up slough. Larus philadelphia. Quite a few, flying in compact flocks with terns when I began shooting. I think