Larus tridactylus 1877 Oct. 29.- Mr. A.M. Hager shot a single bird at Bryant Rock, Marshfield, Mass. During the four preceding days they were certainly abundant and hundreds were killed by the coast shooters. They were all migrating, flew low down in small flocks - were very tame - hovered over their dead or wounded companions so that often the entire flock would be killed. Not more than one immature bird occurred to 27 adults.