ducks than I have seen for a long time. In the evening they were not common, however, several Oidemia deg- landi being the only ones noted. There were a few gulls on the water at high tide this morning near the roundhouse, they were about twenty in number and in a compact flock. They appeared to be adult Larus californicus. On the bay immature Larus glaucescens and adult Larus californicus were following the steamers as usual. In the evening several gulls were seen flying westward, parallel to the mole, the most of them keeping close to the water and flying one behind an- other in small bunches of three or four each. Last evening there was a large flock (probably 100) arching about over the end of the north training wall; many were very high in the air. Passer domesticus are building a nest on a column on the front porch of the house opposite our Gough Street office. April 10, 1907. Alameda to and from San Francisco, Cal.