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 Phaethornithinae Jardine, 1833 - hermits
             Genus Eutoxeres Reichenbach, 1849
               Eutoxeres condamini (Bourcier, 1851) - buff-tailed sicklebill
                 1 Eutoxeres condamini condamini (Bourcier, 1851)
                 2 Eutoxeres condamini gracilis Berlepsch & Stolzmann, 1902