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 [Columbiformes] Latham, 1790 - pigeons and allies
         Family Columbidae Illiger, 1811 - doves, pigeons
           Subfamily Treroninae
             Genus Ducula Hodgson, 1836
               Ducula bicolor (Scopoli, 1786) - pied imperial-pigeon
                 1 Ducula bicolor bicolor (Scopoli, 1786) - nutmeg imperial-pigeon
                 2 Ducula bicolor luctuosa (Temminck, 1824)
                 3 Ducula bicolor spilorrhoa (Gray, 1858)
                 4 Ducula bicolor subflavescens (Finsch, 1886)