southward high in the air and in close formation, about fifty birds to a flock. A few small flocks passed northward. The usual gulls were seen following the ferry steamers. A number were observed on the old t burnt cross beams of the mole; many of these followed the steamer as she left. As we ap- proached our slip on the San Francisco side, a large number of gulls left their roosting places to fly hurriedly to some refuse thrown over by an outgoing Key Route boat. Larus glaucescens. Abundant; chiefly immature. Larus Californicus. A few; chiefly adult. Larus argentatus. Three or four. As usual young Larus glaucescens rode on the after flagstaffs of our steamer. This evening I noted Larus glaucescens, Larus argentatus (one immature one with mantle beginning to appear), and Larus Californicus about the east- bound steamer. I saw one Ardea herodias in the shallow water beside the mole, the tide being out. February 1, 1911. Morning; overcast; southerly winds. Alameda to San Francisco, California. Along the seawall and mole there quite a few ducks on the water and flying, one Otemia deglandi was recognized flying. There were three or four small grebes on the water near the east end of the mole. On the bay just off the Alameda Pier, a flock of