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] Podicipediformes Fürbringer, 1888 [monotypic]
         Family Podicipedidae Bonaparte, 1832 - grebes
           Genus Tachybaptus Reichenbach, 1853
             Tachybaptus dominicus (Linnaeus, 1766) - least grebe
               1 Tachybaptus dominicus brachypterus (Chapman, 1899)
               2 Tachybaptus dominicus bangsi (van Rossem & Hachisuka, 1937) - least grebe
               3 Tachybaptus dominicus dominicus (Linnaeus, 1766)
               4 Tachybaptus dominicus speciosus (Lynch Arribálzaga, 1877)
               5 Tachybaptus dominicus eisenmanni Storer & Getty, 1985