24. back of house, and chirping quite a bit. When at the beach I noted several white birds at a distance which acted like Larus philadelphia, fluttering down now and then to the water. April 8, 1907. Alameda to and from San Francisco, cal. Conditions: - Thick fog in morning; warm; clear; no wind later. This evening gulls were exceedingly thick about the ferry depot, particularly Larus californicus, mostly adults. A few immature ones were seen and also a good many immature Larus glaucescens. When nearing Alameda Mole, three ducks were noted going north quite high in the air and also about a dozen curren, these latter calling. Along the mole I saw several Scamp ducks, two males swimming along together close to the mole, and four of five Oidemia perspicillata. April 9, 1907. Alameda to, and from San Francisco, cal. Conditions: - Warm; clear; light winds. Along the mole and seawall there were (more