46. Larus philadelphia. Quite common. One white- headed one seen. singly and in small flocks. Noted several flying along somewhat like fulmars for a moment or two. Oidemia perspicillata. Four passed off Goat Island going NW. Along the mole a few ducks were seen off at a great distance off on the water. Those close enough for identification looked like Kaup Ducks. April 28, 1907. Alameda, Cal. Conditions:- Moderate temperature; westerly wind; clear. Rowed from foot of Chestnut St. up the canal to the foot of Briggs Avenue. Quite a number of Larus philadelphia were observed all the way along. Both white- headed and hooded. Some on the water. A white- headed one was sitting on the water, trying to get away with something too large for it, when a hooded one came along and attempted to drive it away.