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
               01 Circus aeruginosus (Linnaeus, 1758) - western marsh-harrier
               02 Circus spilonotus Kaup, 1847 - eastern marsh-harrier
               03 Circus approximans Peale, 1848 - swamp harrier
               04 Circus ranivorus (Daudin, 1800) - African marsh-harrier
               05 Circus maillardi Verreaux, 1862 - Madagascar marsh-harrier
               06 Circus buffoni (Gmelin, 1788) - long-winged harrier
               07 Circus assimilis Jardine & Selby, 1828 - spotted harrier
               08 Circus maurus (Temminck, 1828) - black harrier
               09 Circus cyaneus (Linnaeus, 1766) - northern harrier
               10 Circus cinereus Vieillot, 1816 - cinereous harrier
               11 Circus macrourus (Gmelin, 1770) - pallid harrier
               12 Circus melanoleucos (Pennant, 1769) - pied harrier
               13 Circus pygargus (Linnaeus, 1758) - Montagu's harrier