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
                       01 Genus Syrigma Ridgway, 1878
                       02 Genus Egretta Forster, 1817
                       04 Genus Pilherodius Reichenbach, 1850
                       05 Genus Ardea Linnaeus, 1758
                       06 Genus Casmerodius Gloger, 1842 see Genus Ardea Linnaeus, 1758
                       07 Genus Mesophoyx Sharpe, 1894 see Genus Egretta Forster, 1817
                       08 Genus Bubulcus Bonaparte, 1855
                       09 Genus Ardeola Boie, 1822
                       10 Genus Butorides Blyth, 1852
                       11 Genus Agamia Reichenbach, 1853
                       12 Genus Nyctanassa Stejneger, 1887
                       13 Genus Nycticorax Forster, 1817
                       14 Genus Gorsachius Bonaparte, 1855
                       15 Genus Cochlearius Brisson, 1760
                       16 Genus Tigrisoma Swainson, 1827
                       17 Genus Zonerodius Salvadori, 1882
                       18 Genus Tigriornis Sharpe, 1895
                       19 Genus Zebrilus Bonaparte, 1855
                       20 Genus Ixobrychus Billberg, 1828
                       21 Genus Dupetor Heine & Reichenow, 1890
                       22 Genus Botaurus Stephens, 1819