Species Profile

Northern Harrier

Circus hudsonius

Banding code: NOHA

HomeField mapGalleryTrips

3 photographs • 3 tagged locations • View field map

Species Profile

Species notes

Circus cyaneus hudsonius The northern harrier (Circus hudsonius), also known as the marsh hawk or ring-tailed hawk, is a bird of prey. It breeds throughout the northern parts of the Northern Hemisphere in Canada and the northernmost United States. The northern harrier migrates south in winter, with breeding birds in Canada and northern Great Plains of the U.S. moving to the American south, Mexico, and Central America. In the midwestern, mountain west, and north Atlantic states of the U.S., they may be present all year. This bird inhabits prairies, open areas, and marshes.

Scientific nameCircus hudsonius
FamilyHawks, Eagles, and Kites
OrderAccipitriformes
Conservation statusLeast Concern

Photo Collection Overview

Photo capture coverage for this species.

Latest captureMarch 19, 2026
Earliest captureMarch 14, 2026
Locations3 tagged

Image Details

Metadata extracted from the camera files.

Northern Harrier photograph 1
Captured
Camera
Canon Canon EOS R7
Lens
RF100-500mm F4.5-7.1 L IS USM
Exposure
1/1250 s
Aperture
f/9
ISO
500
Focal length
500 mm
Dimensions
5848 × 3902
Megapixels
22.8
File size
5.9 MB
Northern Harrier photograph 2
Captured
Camera
Canon Canon EOS R7
Lens
RF100-500mm F4.5-7.1 L IS USM
Exposure
1/1250 s
Aperture
f/9
ISO
640
Focal length
500 mm
Dimensions
4725 × 3153
Megapixels
14.9
File size
3.7 MB
Northern Harrier photograph 3
Captured
Camera
Canon Canon EOS R7
Lens
RF100-500mm F4.5-7.1 L IS USM
Exposure
1/1250 s
Aperture
f/7.1
ISO
400
Focal length
400 mm
Dimensions
4405 × 2939
Megapixels
12.9
File size
2.6 MB