Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
           Suborder Lari Sharpe, 1891 - gulls and allies
             Family Sternidae Bonaparte, 1838 see Subfamily Sterninae Bonaparte, 1838
               Genus Chlidonias Rafinesque, 1822
                 Chlidonias nigra (C. Linnaeus, 1758) see Chlidonias niger (Linnaeus, 1758)