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 Aglaiocercus J.T. Zimmer, 1930 1 Aglaiocercus kingi (Lesson, 1832) - long-tailed sylph 2 Aglaiocercus coelestis (Gould, 1861) - violet-tailed sylph