Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
         Family Cuculidae Vigors, 1825 - cuckoos
           Subfamily Crotophaginae Swainson, 1837
             Genus Crotophaga Linnaeus, 1758
               Crotophaga sulcirostris Swainson, 1827 - groove-billed ani
                 1 ‡Crotophaga sulcirostris pallidula Bangs & Penard, 1921
                 2 Crotophaga sulcirostris sulcirostris Swainson, 1827