nymphicus hollandicus

from WordNet (r) 3.0 (2006)

Nymphicus hollandicus
    n 1: small grey Australian parrot with a yellow crested head
         [syn: {cockateel}, {cockatiel}, {cockatoo parrot},
         {Nymphicus hollandicus}]

from The Collaborative International Dictionary of English v.0.48

cockatiel \cock"a*tiel\, Cockateel \Cock"a*teel\, n. (Zool.)
   A small gray and white Australian parrot ({Leptolophus
   hollandicus}, formerly {Calopsitta Nov[ae]-Hollandi[ae]})
   with a prominent crest; the male has bright yellow cheeks and
   crest, but the female has only a pale yellow in the face; --
   it is so called from its note.

   Syn: cockateel, cockatoo parrot, {Nymphicus hollandicus}.
        [1913 Webster + WordNet 1.5]