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
                   1 Superfamily Ardeoidea Vigors, 1825 see Order Ardeiformes Wagler, 1830
                   2 Superfamily Scopoidea see Suborder Scopi Bonaparte, 1853
                   3 Superfamily Phoenicopteroidea Stejneger, 1885 see Superfamily Ciconioidea Sundevall, 1836
                   4 Superfamily Threskiornithoidea Richmond, 1917
                   5 Superfamily Pelecanoidea Rafinesque, 1815 see Parvorder Pelecanida (Sharpe, 1891) B.C. Livezey & R.L. Zusi, 2007
                   6 Superfamily Ciconioidea Sundevall, 1836
                   7 Superfamily Procellarioidea Fürbringer, 1888