Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         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
                 Order Ciconiiformes Bonaparte, 1854
                   Family Ardeidae Leach, 1820 - herons, bitterns and egrets
                     Genus Ardea Linnaeus, 1758
                       01 Ardea cinerea Linnaeus, 1758 - grey heron
                       02 Ardea purpurea Linnaeus, 1766 - purple heron
                       03 Ardea novaehollandiae Latham, 1790 see Egretta novaehollandiae (Latham, 1790)
                       04 Ardea pacifica Latham, 1802 - white-necked heron
                       05 Ardea herodias Linnaeus, 1758 - great blue heron
                       06 Ardea cocoi Linnaeus, 1766 - Cocoi heron
                       07 Ardea melanocephala Children & Vigors, 1826 - black-headed heron
                       08 Ardea humbloti Milne-Edwards & Grandidier, 1885 - Humblot's heron
                       09 Ardea goliath Cretzschmar, 1829 - Goliath heron
                       10 Ardea imperialis St. Baker, 1928
                       11 Ardea sumatrana Raffles, 1822 - great-billed heron