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
(b) The American redhead, which is closely allied to the
Red-crested poachard (Zool.), an Old World duck (Branta
Scaup poachard, the scaup duck.
Tufted poachard, a scaup duck (Aythya cristata, or
Fuligula cristata), native of Europe and Asia.