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] Ciconiiformes Bonaparte, 1854
         Family Ardeidae Leach, 1820 - herons, bitterns and egrets
           Subfamily Ardeinae Leach, 1820
             Genus Nycticorax Forster, 1817
               Nycticorax nycticorax (Linnaeus, 1758) - black-crowned night heron
                 1 Nycticorax nycticorax nycticorax (Linnaeus, 1758)
                 2 Nycticorax nycticorax hoactli (Gmelin, 1789)
                 3 Nycticorax nycticorax obscurus Bonaparte, 1855
                 4 Nycticorax nycticorax falklandicus Hartert, 1914