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] Apodiformes Peters, 1940 - swifts
         Family Trochilidae Vigors, 1825 - hummingbirds
           Subfamily Trochilinae Jardine, 1833 - typical hummingbirds
             Genus Thalurania Gould, 1848
               1 Thalurania ridgwayi Nelson, 1900 - Mexican woodnymph
               2 Thalurania colombica (Bourcier, 1843) - blue-crowned woodnymph
               3 Thalurania fannyi (DeLattre & Bourcier, 1846) - green-crowned woodnymph
               4 Thalurania furcata (J.F. Gmelin, 1788) - fork-tailed woodnymph
               5 Thalurania watertonii (Bourcier, 1847) - long-tailed woodnymph
               6 Thalurania glaucopis (J.F. Gmelin, 1788) - violet-capped woodnymph