Classification
Animalia [kingdom]Chordata [phylum]
Aves [class]
Accipitriformes [order]
Accipitridae [family]
Circus [genus]
Genus Circus bevat de volgende taxa:
Circus aeruginosus (Marsh Harrier) [species]
Circus cyaneus (Hen Harrier) [species]
Circus macrourus (Pallid Harrier) [species]
Circus pygargus (Montagu's Harrier) [species]