family Opisthocomidae
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| Noun | 1. | family Opisthocomidae - comprising the hoatzins bird family - a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings Galliformes, order Galliformes - pheasants; turkeys; grouse; partridges; quails; chickens; brush turkeys; curassows; hoatzins genus Opisthocomus, Opisthocomus - type genus of the Opisthocomidae: hoatzins |