Source : Webster's Revised Unabridged Dictionary (1913)

Chachalaca \Cha`cha*la"ca\, n. [Native name, prob. given in
   imitation of its cry.] (Zo["o]l.)
   The Texan guan ({Ortalis vetula}). [written also
   {chiacalaca}.]

Source : WordNet®

chachalaca
     n : slender arboreal guan resembling a wild turkey; native to
         Central America and Mexico; highly regarded as game birds