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A scaup duck. See below. Scaup duck (Zoöl.), any one of several species of northern ducks of the genus Aythya, or Fuligula. The adult males are, in large part, black. The three North American species are: the greater scaup duck (Aythya marila, var. nearctica), called also broadbill, bluebill, blackhead, flock duck, flo…

A tool with a semicircular edge, -- used by engravers to clear away the spaces between the lines of an engraving. Fairholt.

The scaup duck.

ck of the genus Fuligula. Two American species (F. marila and F. affinis) are common. See Scaup duck.

oast of the United States, in autumn; - - called also bluebill, blackhead, raft duck, and scaup duck. See Scaup duck.

r in companies or crowds. Friends daily flock. Dryden. Flocking fowl (Zoöl.), the greater scaup duck.

e European poachard. Red-crested poachard (Zoöl.), an Old World duck (Branta rufina). -- Scaup poachard, the scaup duck. -- Tufted poachard, a scaup duck (Aythya, or Fuligula cristata), native of Europe and Asia.

[The name alludes to its swimming in dense flocks.] (Zoöl.) (a) The bluebill, or greater scaup duck; -- called also flock duck. See Scaup. (b) The redhead. -- Raft port (Naut.), a large, square port in a vessel's side for loading or unloading timber or other bulky articles; a timber or lumber port.

ving a well defined ring of color around the neck. Ring- necked duck (Zool.), an American scaup duck (Aythya collaris). The head, neck, and breast of the adult male are black, and a narrow, but conspicuous, red ring encircles the neck. This ring is absent in the female. Called also ring-neck, ring-necked blackhead, rin…

The ring-necked scaup duck; -- called also ring-billed blackhead. See Scaup.

Same as Scauper.

The scaup duck.

Either one of the three common American scaup ducks. See Scaup duck, under Scaup.

The American scaup duck. [Local, U. S.]