Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Passerimorphae Sibley et al., 1988
           Order Ciconiiformes Bonaparte, 1854
             Suborder Ciconii see Suborder Ciconiae Bonaparte, 1854
               Infraorder Ciconiides see Suborder Ciconiae Bonaparte, 1854
                 Parvorder Ciconiida see Suborder Ciconiae Bonaparte, 1854
                   Superfamily Ardeoidea Vigors, 1825 see Order Ardeiformes Wagler, 1830
                     Family Ardeidae Leach, 1820 - herons, bitterns and egrets
                       Genus Ardea Linnaeus, 1758
                         01 Ardea cinerea Linnaeus, 1758 - grey heron
                         02 Ardea herodias Linnaeus, 1758 - great blue heron
                         03 Ardea cocoi Linnaeus, 1766 - Cocoi heron
                         04 Ardea pacifica Latham, 1802 - white-necked heron
                         05 Ardea melanocephala Children & Vigors, 1826 - black-headed heron
                         06 Ardea humbloti Milne-Edwards & Grandidier, 1885 - Humblot's heron
                         07 Ardea goliath Cretzschmar, 1829 - Goliath heron
                         08 Ardea insignis Hume, 1878 - white-bellied heron
                         09 Ardea sumatrana Raffles, 1822 - great-billed heron
                         10 Ardea purpurea Linnaeus, 1766 - purple heron
                         11 Ardea picata Gould, 1845 - pied heron see Egretta picata (Gould, 1845)