All birds/Accipitridae/Northern Harrier
AI reconstruction of Northern Harrier (Circus hudsonius)AI

AI reconstruction created with Nano Banana 2 · 1K, grounded in the profile’s documented taxonomy, habitat, natural-history sources, and an open-license visual reference when available. It is an interpretive image, not documentary evidence. Image policy

Northern Harrier (Circus hudsonius)
Verified source photographnigelCC-BY · View source
PRB-0214Accipitriformes

Northern Harrier

Gavilán de Ciénaga

Circus hudsonius

Accidental / vagrantIUCN LC · Least Concern

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.

FamilyAccipitridaeHawks, Eagles, and Kites
Puerto Rico occurrenceAccidental / vagrantAvibase inferred core 380
Primary habitatwetlandsWetland
Primary dietVertebrateVertivore
Average mass470.5 gGlobal trait estimate
MovementPartial migrantAerial

Sound archive

Hear its voice

Explore real songs and calls. The spectrogram turns each sound into a visual trace of time and frequency.

XC1102417Recording 1 of 3call
Spectrogram of Northern Harrier: call
SpectrogramCircus hudsonius

Play: call by Greg Irving

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Sound recorded by Greg Irving · XC1102417 · CC BY-NC-SA 4.0. Visualization by Stichting Xeno-canto voor Natuurgeluiden.

Every recording retains the creator, catalogue number, and license published by Xeno-canto. Metadata via GBIF

Island profile

Catalog scopeAvibase inferred core 380

About the Northern Harrier

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.

Conservation

Least Concern

IUCN LC

Global IUCN
LC
Puerto Rico DNER
No current listing in source crosswalk
Federal ESA
No current listing in source crosswalk
Critical habitat
Not identified in source crosswalk

Natural history

How it lives

Habitat
wetlands
Elevation
0–2400 m
Nest
Ground
Clutch
3–7 eggs
Social behavior
Not resolved

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This bird belongs to 7 paths through the atlas.

Evidence trail

Sources, media & further reading