The Collaborative International Dictionary of English v.0.48:

Scoter \Sco"ter\, n. [Cf. Prov. E. scote to plow up.] (Zool.)
   Any one of several species of northern sea ducks of the genus
   Oidemia.
   [1913 Webster]

   Note: The European scoters are Oidemia nigra, called also
         black duck, black diver, surf duck; and the
         velvet, or double, scoter (Oidemia fusca). The common
         American species are the velvet, or white-winged,
         scoter (Oidemia Deglandi), called also velvet duck,
         white-wing, bull coot, white-winged coot; the
         black scoter (Oidemia Americana), called also black
         coot, butterbill, coppernose; and the surf scoter,
         or surf duck (Oidemia perspicillata), called also
         baldpate, skunkhead, horsehead, patchhead,
         pishaug, and spectacled coot. These birds are
         collectively called also coots. The females and young
         are called gray coots, and brown coots.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Widgeon \Widg"eon\, n. [Probably from an old French form of F.
   vigeon, vingeon, gingeon; of uncertain origin; cf. L. vipio,
   -onis, a kind of small crane.] (Zool.)
   Any one of several species of fresh-water ducks, especially
   those belonging to the subgenus Mareca, of the genus
   Anas. The common European widgeon (Anas penelope) and the
   American widgeon (Anas Americana) are the most important
   species. The latter is called also baldhead, baldpate,
   baldface, baldcrown, smoking duck, wheat, duck, and
   whitebelly.
   [1913 Webster]

   Bald-faced widgeon, or Green-headed widgeon, the American
      widgeon.

   Black widgeon, the European tufted duck.

   Gray widgeon.
   (a) The gadwall.
   (b) The pintail duck.

   Great headed widgeon, the poachard.

   Pied widgeon.
   (a) The poachard.
   (b) The goosander.

   Saw-billed widgeon, the merganser.

   Sea widgeon. See in the Vocabulary.

   Spear widgeon, the goosander. [Prov. Eng.]

   Spoonbilled widgeon, the shoveler.

   White widgeon, the smew.

   Wood widgeon, the wood duck.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Baldpate \Bald"pate`\, n.
   1. A baldheaded person. --Shak.
      [1913 Webster]

   2. (Zool.) The American widgeon (Anas Americana).
      [1913 Webster] Baldpate

The Collaborative International Dictionary of English v.0.48:

Baldpate \Bald"pate`\, Baldpated \Bald"pat`ed\, a.
   Destitute of hair on the head; baldheaded. --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

baldpate
    n 1: a person whose head is bald [syn: baldhead, baldpate,
         baldy]
    2: a widgeon the male of which has a white crown [syn: American
       widgeon, baldpate, Anas americana]