North America, south to north-western Mexico and south-eastern Virginia (USA). Winters south to northern South America. Considered by some authors to be a subspecies of Northern Harrier (Circus cyaneus).
Northern Harrier (Circus hudsonius) [XC333648]
by Ian Cruickshank from Winnemucca, Humboldt County, Nevada, United States (alarm call, call, flight call)
Northern Harrier (Circus hudsonius) [XC550984]
by Paul Marvin from Lower Latham, Weld County, Colorado, United States (call)
Subspecies
Considered by some authors to be a subspecies of Northern Harrier (Circus cyaneus).