Gray Hawk

Quick Facts

  • Scientific Name: Buteo plagiatus
  • Spanish Name: Gavilán gris
  • Family: Accipitridae
  • Known Nicknames: Mexican Goshawk, Gray-lined Hawk
  • Average Length: 46–61 cm / 18–24 in
  • Average Weight: 475–700 g / 16.8–24.7 oz
  • Wingspan: 91–104 cm / 36–41 in
  • Key Feature: Pale gray head and breast with fine white barring on the underparts
  • Primary Diet: Carnivore
  • Range: Southern Arizona and Texas through Central America to northern Colombia
  • Habitat: Tropical lowland forests, riparian woodlands, and savanna edges
  • Social Structure: Solitary or in pairs
  • Nesting/Breeding: Stick nest in a tree fork
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The Gray Hawk (*Buteo plagiatus*) is a sleek, medium-sized raptor of the American tropics and subtropics, distinguished by its striking slate-gray upperparts and finely barred white underparts, creating a crisp, elegant silhouette in flight. Unlike many buteos, it is a master of stealth, often hunting from a concealed perch before diving swiftly to snatch lizards, snakes, and small birds with its long, agile legs. Its most special feature is a bright white rump patch just above a boldly banded black-and-white tail, a field mark that flashes vividly as it soars. With a piercing yellow cere and a piercing, high-pitched whistle that echoes through riparian woodlands, this hawk is both a visual and auditory gem of the neotropics.

Fun Facts

Despite its name, the Gray Hawk is not always gray; juveniles are heavily streaked with brown and white, earning them the nickname "Mexican Goshawk" for their fierce, accipiter-like hunting style in dense brush. They have a peculiar habit of "still-hunting" from a low perch, then crashing through foliage on foot to snatch lizards and snakes, rather than relying solely on aerial stoops. One quirky behavior is their penchant for "anting"—rubbing ants or other insects through their feathers to secrete formic acid, which likely helps control parasites. They also exhibit a rare trait among raptors: they can rotate their heads nearly 180 degrees to scan behind them, a useful adaptation for spotting prey in tangled thickets.

Habitats & Distribution

The Gray Hawk primarily inhabits lowland tropical and subtropical forests, favoring riparian corridors, gallery forests, and woodland edges near water sources such as rivers and marshes. It is also found in open woodlands, savannas with scattered trees, and sometimes in semi-arid scrub or mangroves, but it generally avoids dense, continuous rainforest and high-altitude areas. Geographically, the Gray Hawk's range extends from the southwestern United States (southern Arizona, New Mexico, and Texas) through western and eastern Mexico, Central America, and into northern South America as far as northwestern Colombia and western Venezuela. It is resident year-round across most of this distribution, with some northern populations making short-distance seasonal movements.

Behaviours & Reproduction

Gray Hawks are generally solitary or found in pairs, maintaining a monogamous bond throughout the breeding season. Courtship involves aerial displays where the male performs steep dives and swoops near the female, often calling loudly. They are territorial and defend a nesting area vigorously, with both partners participating in nest construction, typically building a stick platform high in a tree. The female lays a clutch of 2 to 3 eggs, and incubation lasts about 32 days, primarily performed by the female while the male provides food. A unique reproductive strategy is their strong site fidelity; pairs often reuse and refurbish the same nest year after year, adding fresh greenery to the structure. After hatching, the male continues to hunt and deliver prey to the female, who feeds the chicks until they are old enough to tear food themselves. The young fledge around 6 weeks of age but remain dependent on the parents for several more weeks as they learn to hunt.

Diet

The Gray Hawk is a specialized predator with a diet dominated by reptiles, particularly lizards, which can constitute over 80% of its food intake. It employs a sit-and-wait hunting strategy, perching on exposed branches or utility lines before swooping down to snatch prey from trees, bushes, or the ground. Interestingly, while it primarily hunts reptiles like spiny lizards and anoles, it also opportunistically takes small mammals, birds, frogs, and large insects such as grasshoppers and cicadas, especially during breeding season when it needs to feed its young. A notable fact is that the Gray Hawk often decapitates larger lizards before consuming them, a behavior that may help handle struggling prey or avoid injury from bites.

Colors

The Gray Hawk has a pale gray head, back, and upper chest, with fine white barring on the belly and thighs, while its tail features three distinct dark bands against a lighter gray base. Juveniles are brown above with heavy brown streaking on a white chest, and their tails show narrow dark bands. Its cryptic gray plumage blends seamlessly with the dappled light and bark of tropical dry forests, providing excellent camouflage from prey and predators.