living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
                   Order Coraciiformes Forbes, 1884 - rollerlike birds
                     Family Alcedinidae Bonaparte, 1831 - kingfishers
                       1 Genus Ceryle Boie, 1828
                       2 Genus Alcedo Linnaeus, 1758 - little kingfisher
                       3 Genus Ceyx de Lacépède, 1799
                       4 Genus Halcyon Swainson, 1821
                       5 Genus Dacelo Leach, 1815
                       6 Subfamily Cerylinae Reichenbach, 1851