hoatzin
Concise Oxford English Dictionary © 2008 Oxford University Press:
hoatzin /həʊˈatsɪn/
▶noun a large tree-dwelling tropical American bird with weak flight. [Opisthocomus hoazin.]
– origin C17: from Amer. Sp., from Nahuatl uatzin, prob. imitative of its call.
'hoatzin' also found in these Oxford entries:

