The Collaborative International Dictionary of English v.0.48:

Pedioecetes \Pedioecetes\ n.
   A genus of fowl including the sharp-tailed grouse
   (Pedioecetes phasianellus, also called the prairie
   chicken).

   Syn: genus Pedioecetes.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

sharp-tailed grouse
    n 1: large grouse of prairies and open forests of western North
         America [syn: sharp-tailed grouse, sprigtail, sprig
         tail, Pedioecetes phasianellus]