Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
                   Suborder Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
                     Family Burhinidae Mathews, 1912 - thick-knees
                       Genus Esacus Lesson, 1831
                         1 Esacus recurvirostris (Cuvier, 1829)
                         2 Esacus magnirostris (Vieillot, 1818) - great stone plover