both flying and sitting on the water. In the evening the same species were seen, and just out from San Francisco we encountered quite a number flying and calling, the call of the Larus californicus being noticeably different from those of Larus glaucescens heard earlier in the year. Three cormorants seem flying high in the air. While in the back yard this evening I saw about a dozen Nycticorax nycticorax straggle over going southeast towards the marshes and beaches. Some squawked a little as they passed, March 25, 1911. Alameda to San Francisco, California. In crossing the bay this morning and this evening, I saw three or four ducks in flight. The piles on the San Francisco side were occupied by young Larus glaucescens, a few of which also followed the steamers along with a good many Adult Larus californicus. March 27, 1911. Alameda to San Francisco, California. Along the seawall and mole I saw a few ducks both yes- terday and today, also an occasional gull. On the bay on both days quite a number of young Larus glaucescens were seen, chiefly on the San Francisco side. Larus cali- ifornicus was the commonest gull, and followed the steamers most commonly; but few young ones were seen. This morning I saw one loon flying north high in the air.