aythya ferina

from WordNet (r) 3.0 (2006)

Aythya ferina
    n 1: heavy-bodied Old World diving duck having a grey-and-black
         body and reddish head [syn: {pochard}, {Aythya ferina}]

from The Collaborative International Dictionary of English v.0.48

Poachard \Poach"ard\ (p[=o]ch"[~e]rd), n. [From {Poach} to
   stab.] [Written also {pocard}, {pochard}.] (Zool.)
   (a) A common European duck ({Aythya ferina}); -- called also
       {goldhead}, {poker}, and {fresh-water widgeon}, or
       {red-headed widgeon}.
   (b) The American redhead, which is closely allied to the
       European poachard.
       [1913 Webster]

   {Red-crested poachard} (Zool.), an Old World duck ({Branta
      rufina}).

   {Scaup poachard}, the scaup duck.

   {Tufted poachard}, a scaup duck ({Aythya cristata}, or
      {Fuligula cristata}), native of Europe and Asia.
      [1913 Webster]