The Collaborative International Dictionary of English v.0.48:

Quesal \Que*sal"\, n. (Zool.)
   The long-tailed, or resplendent, trogon (Pharomachus
   mocinno, formerly Trogon resplendens), native of Southern
   Mexico and Central America. Called also quetzal, and
   golden trogon.
   [1913 Webster]

   Note: The male is remarkable for the brilliant metallic green
         and gold colors of his plumage, and for his extremely
         long plumes, which often exceed three feet in length.
         [1913 Webster]

WordNet (r) 3.0 (2006):

quetzal
    n 1: the basic unit of money in Guatemala; equal to 100 centavos
    2: large trogon of Central America and South America having
       golden-green and scarlet plumage [syn: quetzal, quetzal
       bird]