hoatzin

 
Pronunciation: /həʊˈatsɪn/

noun

  • a large tree-dwelling tropical American bird with weak flight. Young hoatzins have hooked claws on their wings, enabling them to climb about among the branches.
    • Opisthocomus hoazin, the only member of the family Opisthocomidae (order Galliformes or Cuculiformes)

Origin:

mid 17th century: from American Spanish, from Nahuatl uatzin, probably imitative of its call