cock·a·tiel /ˈkɑkəˌti(ə)l/
  一種小形鸚鵡
  cock·a·tiel, Cock·a·teel n. Zool. A small gray and white Australian parrot (Leptolophus hollandicus, formerly Calopsitta Novæ-Hollandiæ) 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.
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  cockatiel
       n : small gray Australian parrot with a yellow crested head
           [syn: cockateel, cockatoo parrot, Nymphicus
           hollandicus]