ducks, blangula clangula, and Oidemia perspic- illata. There were several Larus glaucescens on the piles both on the Alameda and San Francisco side. All were immature birds. I rode inside the steamer both ways; gulls follow abundantly, chiefly Larus glaucescens. It was low tide about 5:30 P.M. to-day; there were four or five hundred gulls on the sand beside the mole, they were spread out over considerable area. In the shallow water there were a good many ducks, mostly scaup ducks and canvasbacks, feeding. The scoters seemed to keep in the deeper water. In the late afternoon I saw quite a few flying towards the SE from the mole; they were apparently going to roost; they were quite high in the air. March 13, 1907. Alameda to and from San Francisco, Cal. Conditions: - clear; westerly wind; cold in morning. In the morning there were a few gulls on the beach near the Roundhouse. Quite a number of Scaup ducks and Aythya valieneria feeding in the shallow water. They do not even lift their heads when the train passes. In the deeper water are the Oidemia perspicillata; these when close to the track often dive as the train passes. In the evening Larus glaucescens and