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 Phaenicophaeinae
             Genus Zanclostomus Swainson, 1837
               Zanclostomus curvirostris (Shaw, 1810)
                 1 Zanclostomus curvirostris singularis (Parrot, 1907)
                 2 Zanclostomus curvirostris oeneicaudus (Verreaux & Verreaux, 1855)
                 3 Zanclostomus curvirostris curvirostris (Shaw, 1810)
                 4 Zanclostomus curvirostris deningeri (Stresemann, 1913)
                 5 Zanclostomus curvirostris borneensis (Blasius & Nehrkorn, 1881)
                 6 Zanclostomus curvirostris harringtoni (Sharpe, 1877)