On the bay I saw two Larus occidentalis and Larus californicus and Larus heermanni. Larus californicus was commonest. San Francisco to Alameda, Cal. Conditions: - 5:15 to 5:35 P.M. Clear; warm; windy. I saw a few Larus occidentalis, Larus californicus, and Larus heermanni. Aug. 30, 1904. Conditions: - 7:00 A.M. to 8:00 A.M. Warm; clear; west wind. As I went down the street I noted a male and female baltimorean on a telephone wire. Suddenly another bird (probably a male) darted up and drove the male on the wire away. The successful male returned and perched on the wire. It opened its bill and made sort of a squealing noise, gradually edging up to the female. Finally they darted away, one in pursuit of the other. Near Park St. I saw another humming bird on a telephone wire. Passerdomesticus were abundant. I saw only three gulls off the seawall near 5th St. Along the mole there were three or four hundred gulls - principally Larus occidentalis and Larus californicus. A few Ardea herodias were present, some flying as the train passed. On the bay I saw Larus occidentalis, Larus californicus, and possibly Larus heermanni. The second species most abundant. Young birds of first two in dark plumage abundant. San Francisco to Alameda, Cal. Conditions: - 5:15 to 5:35 P.M. Clear; warm; west wind.