PaleoDB taxon number: 368506

Alternative combination: Falco hudsonius

Belongs to Circus according to J. F. Clements et al. 2017

Sister taxa: Circus aeruginosus, Circus approximans, Circus assimilis, Circus buffoni, Circus cinereus, Circus cyaneus, Circus dossenus, Circus eylesi, Circus hamiltoni, Circus macrosceles, Circus macrourus, Circus maillardi, Circus maurus, Circus melanoleucos, Circus pygargus, Circus ranivorus, Circus spilonotus, Circus spilothorax, Circus teauteensis