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 Circus Lacépède, 1799
Circus cyaneus (Linnaeus, 1766) - northern harrier
Circus cyaneus hudsonius (Linnaeus, 1766) - American harrier