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 Ciconiiformes Bonaparte, 1854
                     Family Ardeidae Leach, 1820 - herons, bitterns and egrets
                       1 Genus Botaurus Stephens, 1819
                       2 Genus Nycticorax Forster, 1817
                       3 Genus Ardeola Boie, 1822
                       4 Genus Butorides Blyth, 1852
                       5 Genus Egretta Forster, 1817
                       6 Genus Ardea Linnaeus, 1758
                       7 Subfamily Ardeinae Leach, 1820
                       8 Subfamily Botaurinae Bock, 1956