Hawks of North America: Complete Identification Guide

“Hawk” is the loosest word in North American raptor watching. It is applied to a soaring buteo over a highway, a woodland accipiter raiding a feeder, a marsh-hugging harrier, and sometimes to kites and even falcons. To identify hawks reliably, the first useful step is not memorising species but understanding the body plans. Once you can separate a buteo from an accipiter from a harrier, most identifications become a shortlist rather than a guess.

What Counts as a Hawk in North America

Strictly, “hawk” has no single taxonomic meaning. In North America it is a catch-all for the medium-sized diurnal birds of prey in the family Accipitridae — the same family that includes eagles and kites. Falcons, despite the similarity of some names, belong to a different family, and New World vultures to another again. That is why a Harris’s Hawk and a Red-tailed Hawk sit together as “hawks” while a Peregrine Falcon does not. Three groups cover virtually everything an observer will call a hawk:

• Buteos — the soaring hawks. Broad, rounded wings, short fan-shaped tails, and a habit of circling on thermals or perching conspicuously on poles and dead trees.
• Accipiters — the woodland hawks. Short, rounded wings and long tails built for threading between trunks at speed, with a flap-flap-glide flight pattern.
• The Northern Harrier — a slim, long-winged hawk of open marsh and field that courses low with a rocking motion and shows a bold white rump patch.

The Three Body Plans, Side by Side

The table below is the single most useful reference for hawk identification. Wing shape is not a matter of taste: it follows directly from hunting style and habitat, and every other field mark flows from it.

The Species You Are Most Likely to See

These species account for the overwhelming majority of hawk sightings. Wingspans are approximate adult ranges; females are typically 10–30% larger than males.

Telling Them Apart in the Field

When a hawk is overhead, work in this order. First, look at the tail: short and fanned means buteo; long and narrow means accipiter or harrier. Second, look at wing attitude: accipiters flap and glide in bursts, harriers rock along low, buteos hold steady wings. Third, look for the white rump patch, which is diagnostic of a harrier in North America.

The commonest confusion is between Cooper’s and Sharp-shinned Hawks, which differ mainly in size, head proportions, and tail shape. A Cooper’s Hawk is larger with a rounded, blocky head and a clearly rounded tail tip; a Sharp-shinned Hawk is smaller with a small, round-headed look and a squared tail tip. Head size relative to the body is the most reliable single clue. Our guides to identifying raptors in flight and identifying birds of prey take the silhouette method further; the Red-tailed Hawk page is the best benchmark species to learn first.

Habitat and Season Patterns

Knowing what should be present at a given place and time eliminates most wrong answers before you raise your binoculars. Three seasonal patterns are worth internalising. Resident species such as the Red-tailed Hawk are present year-round across most of their range, with only northern birds drifting south. Long-distance migrants leave entirely: Broad-winged Hawks winter in South America and migrate in synchronised “kettles” that can number in the thousands, while Swainson’s Hawks cross the equator to the Argentine pampas. Arctic breeders such as the Rough-legged Hawk appear in temperate North America only in winter, hunting open fields on feathered legs that betray their cold origins.

Habitat narrows the answer further: buteos want open country with perches, accipiters want cover and edge, and the harrier wants wet, low vegetation.

Conservation and Outlook

Most North American hawks are in reasonable shape, and several have benefited from the twentieth-century recovery of forests and the banning of the organochlorine pesticides that once thinned their eggshells. The Red-tailed Hawk has expanded across the continent and now nests in cities. But “common” is not “safe everywhere,” and three pressures recur:

• Persecution — illegal shooting and trapping continues, often at migration bottlenecks. Species labelled “chicken hawks,” such as Cooper’s Hawk, are frequent targets even though studies repeatedly show they take few poultry or game birds.
• Lead poisoning — hawks that scavenge gut piles from hunted game, especially in winter, can ingest lead fragments and die. It is the single most preventable cause of adult mortality for many scavenging raptors.
• Habitat loss and disturbance — grassland buteos, notably Ferruginous and Swainson’s Hawks, are the group most at risk as native prairie is converted. For the wider picture, see endangered raptors.

The Harris’s Hawk is a special case worth knowing: it is the only North American hawk that habitually hunts in cooperative packs, using a relay of birds to corner prey in scrub.

Frequently Asked Questions

What is the most common hawk in North America?

The Red-tailed Hawk. It breeds from Alaska and Canada to Panama, is resident across most of the United States, and its habit of perching on roadside poles and wires makes it the hawk most people see without trying. Sharp-shinned and Cooper’s Hawks are also widespread and are the hawks most likely to visit backyard feeders.

How do I tell a hawk from a falcon?

Falcons have pointed wings, a long narrow tail, a fast direct flight with stiff wingbeats, and a small notch on the upper beak called a tomial tooth. Hawks have broader, more rounded wings and shorter or more fanned tails, and accipiters flap and glide rather than flying with sustained rapid beats. A full comparison is in our falcon versus hawk guide.

Are hawks dangerous to people or pets?

No. Hawks pose no threat to adult humans. Large buteos can take small prey, so a very small pet left unsupervised outdoors is rarely at risk from a large accipiter, but this is uncommon. The usual conflict is at bird feeders, where Accipiter hawks hunt the stocked species.

Why do hawks soar in circles?

They are riding rising columns of warm air called thermals, gaining altitude with little energy expenditure. This is especially common during migration, when Broad-winged and Swainson’s Hawks form large “kettles” of circling birds before gliding south in a long, energy-efficient step.

Do hawks migrate?

Some do, some do not. Many Red-tailed and Red-shouldered Hawks are resident year-round, while Broad-winged Hawks winter in South America, Swainson’s Hawks cross the equator to Argentina, and Rough-legged Hawks move south out of the Arctic each autumn to winter in temperate farmlands.

Are hawks protected by law?

In the United States and Canada, all native birds of prey are protected — in the United States by the Migratory Bird Treaty Act, and in Canada by provincial and federal wildlife law. It is illegal to harm, harass, or possess hawks or their parts without a permit. Our guide to helping save birds of prey covers constructive options.

Explore the individual species in depth — Red-tailed Hawk, Cooper’s Hawk, Sharp-shinned Hawk, and Harris’s Hawk — or learn the wider method in identifying birds of prey.