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 Strigimorphae see Superorder Falconimorphae Seebohm, 1890
           Order Strigiformes Wagler, 1830 - owls
             Suborder Caprimulgi Ridgway, 1881 - goatsuckers
               Infraorder Caprimulgides see Suborder Caprimulgi Ridgway, 1881
                 Parvorder Steatornithida see Suborder Caprimulgi Ridgway, 1881
                   Superfamily Steatornithoidea see Suborder Caprimulgi Ridgway, 1881
                     Family Steatornithidae Gray, 1846 - oilbird
                       1 Genus Steatornis Humboldt, 1814