The Collaborative International Dictionary of English v.0.48:

Squawk \Squawk\, n.
   1. Act of squawking; a harsh squeak.
      [1913 Webster]

   2. (Zool.) The American night heron. See under Night.
      [1913 Webster]

   Squawk duck (Zool.), the bimaculate duck (Anas
      glocitans). It has patches of reddish brown behind, and
      in front of, each eye. [Prov. Eng.]
      [1913 Webster]