Cuculiformes
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Subclass: Neornithes (2,057 genera / 9,672 species)
Infraclass: Eoaves
Parvclass: Passerae
Superorder: Cuculimorphae
Order: Cuculiformes (30/143 – Old World and American cuckoos, coucals, hoatzin, anis, guira cuckoo)
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Infraorder: Cuculides
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Parvorder: Cuculida
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Superfamily: Cuculoidea
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Family: Cuculidae (17/79 – Old World cuckoos)
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Family: Centropodidae (1/30 – coucals)
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Family: Coccyzidae (4/18 – American cuckoos)
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Parvorder: Opisthocomida
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Family: Opisthocomidae (1/1 – hoatzin)
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Family: Crotophagidae (2/4)
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Tribe: Crotophagini (anis)
Tribe: Guirini (guira cuckoo)
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Family: Neomorphidae (5/11 – roadrunners, ground-cuckoos)
