The Collaborative International Dictionary of English v.0.48:

Bluebill \Blue"bill`\, n. (Zool.)
   A duck of the genus Fuligula. Two American species
   (Fuligula marila and Fuligula affinis) are common. See
   Scaup duck.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Broadbill \Broad"bill`\, n.
   1. (Zool.) A wild duck (Aythya marila, or Fuligula
      marila), which appears in large numbers on the eastern
      coast of the United States, in autumn; -- called also
      bluebill, blackhead, raft duck, and scaup duck.
      See Scaup duck.
      [1913 Webster]

   2. (Zool.) The shoveler. See Shoveler.
      [1913 Webster]