Common names and taxonomic order in this booklet follow those established by the American Ornithologist's Union, 1983. Forest, beach meadow, and tidal flats attract many birds species, particularly during migration. Rain forest species include the three-toed woodpecker, often seen near Blackwater Pond. Shorebirds, waterfowl, and eagles use beaches. Gulls, diving ducks, and alcids feed near shore.
Isolated islands offer refuge from land predators.
Large numbers of glacous-winged gulls nest near tufted and horned puffins, guillemots, and oystercatchers. Since such colonies are sensitive to human disturbance, many are closed to landings. Tidal flats and shallow waters in these areas attract a large number and variety of waterfowl. Tidal currents and turbulence at certain locations stir food organisms to the surface for feeding sea birds. Flightless flocks linger from mid-july through August.