Source : Webster's Revised Unabridged Dictionary (1913)

Squawk \Squawk\, n.
   1. Act of squawking; a harsh squeak.

   2. (Zo["o]l.) The American night heron. See under {Night}.

   {Squawk duck} (Zo["o]l.), the bimaculate duck ({Anas
      glocitans}). It has patches of reddish brown behind, and
      in front of, each eye. [Prov. Eng.]