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 Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
             Family Chionididae Lesson, 1828 - sheathbills
               Genus Chionis Forster, 1788
                 Chionis alba (J.F. Gmelin, 1789) - snowy sheathbill see Chionis albus (Gmelin, 1789)
                 Chionis minor Hartlaub, 1841 - black-faced sheathbill