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] Falconiformes Sharpe, 1874
Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
Subfamily Accipitrinae Vieillot, 1816 - hawks, eagles
Genus Rostrhamus Lesson, 1830
Rostrhamus sociabilis (Vieillot, 1817) - snail kite
1 Rostrhamus sociabilis plumbeus Ridgway, 1874 - everglade snail kite
2 Rostrhamus sociabilis levis Friedmann, 1933
3 Rostrhamus sociabilis major Nelson & Goldman, 1933
4 Rostrhamus sociabilis sociabilis (Vieillot, 1817)