Aug. 12, 1907. Alameda to and from San Francisco, Cal. Conditions: - Moderate temperature; west wind; clear. On the great stretch of sand exposed by the outgoing tide near the mole were a few large shore birds close to the marsh while on the outer stretches of sand and on the sandspits were a couple of hundred or so gulls, all too far from the train to be identified. A tern was noted diving near by, Tyro Ardea herodias in water up to tibiae. On the way in the morning occasional gulls were seen, Larus occidentalis, Larus heer- manni, and one or two lighter-backed gulls probably Larus californicus or L. delawarensis. I noted a Larus heermanni dropped hurriedly to the water to pick up something; it remained there for a moment with wings outspread and uplifted. Aug. 13, 1907. Alameda to San Francisco, Cal. Conditions: Moderate temperature; calm; low tide. On the sand and in the shallow waters were two or three hundred gulls.