Florida and the Game Water-Birds of the Atlantic Coast and the Lakes of the United States / With a full account of the sporting along our sea-shores and inland waters, and remarks on breech-loaders and hammerless guns

by Robert Barnwell Roosevelt

Sea-Duck.

Genus Fuligula.

Generic Distinctions.—In this class the head is rather larger, neck rather shorter and thicker, than in the preceding genus (Anas), plumage more dense, feet stronger, and the hind toe with a broad appendage, which is the principal distinction.