conditions: - Wwind; moderate temperature; clear. There was an abundance of gulls on the exposed sand and mud near the roundhouse both this morning and yesterday morning. One or two curlews. On the day this evening a number of common Larus californicus and more quite a number of white-headed Larus philadelphia were observed. Some the latter had landed tailward and many were sitting on the water & the southward of Goat Island. Three ducks were observed going north. This morning west of Sixth St. Station I saw a Mycticorax mycticorax standing on the edge of a pool left by the tide. It was standing hunched up in characteristic fashion. During the past few days I have noted Passer domesticus flying about the ruins of the Parrott and Academy of Sciences buildings with straws in their bills. I noted a pair mating on one of the busy streets near Van Ness Avenue the other day. The male pursuing the female about, and fluttering his wings and chirping continually.