hoatzin: crested ill-smelling South American bird whose young have claws on the first and second digits of the wings
gallinaceous bird: heavy-bodied largely ground-feeding domestic or game birds
arecidae: one of four subclasses or superorder of Monocotyledones; comprises about 6400 species in 5 families of trees and shrubs and terrestrial herbs and a few free-floating aquatics including: Palmae; Araceae; Pandanaceae and Lemnaceae