Roughleg

from WordNet (r) 3.0 (2006)

roughleg
    n 1: large hawk of the northern hemisphere that feeds chiefly on
         small rodents and is beneficial to farmers [syn: {rough-
         legged hawk}, {roughleg}, {Buteo lagopus}]

from The Collaborative International Dictionary of English v.0.48

Roughleg \Rough"leg`\, n. (Zool.)
   Any one of several species of large hawks of the genus
   {Archibuteo}, having the legs feathered to the toes. Called
   also {rough-legged hawk}, and {rough-legged buzzard}.
   [1913 Webster]

   Note: The best known species is {Archibuteo lagopus} of
         Northern Europe, with its darker American variety
         ({Sancti-johannis}). The latter is often nearly or
         quite black. The ferruginous roughleg ({Archibuteo
         ferrugineus}) inhabits Western North America.
         [1913 Webster]