Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
         Family Recurvirostridae Bonaparte, 1831 - stilts, avocets
           Genus Recurvirostra Linnaeus, 1758
             Recurvirostra americana Gmelin, 1789 - American avocet