The Collaborative International Dictionary of English v.0.48:

Impeyan pheasant \Im"pey*an pheas"ant\ ([i^]m"p[i^]*an
   f[e^]z"ant). [From Lady Impey, who attempted to naturalize
   the bird in England.] (Zool.)
   An Indian crested pheasant of the genus Lophophorus.
   Several species are known. Called also monaul, monal.
   [1913 Webster]

   Note: They are remarkable for the bright color and brilliant
         matallic hues of their plumage. The best known species
         (Lophophorus Impeyanus) has the neck of a brilliant
         metallic red, changing to golden yellow in certain
         lights.
         [1913 Webster]

WordNet (r) 3.0 (2006):

monaul
    n 1: brilliantly colored pheasant of southern Asia [syn:
         monal, monaul]