Common Black Hawk
Buteogallus anthracinus
Quick Facts
- Scientific Name: Buteogallus anthracinus
- Spanish Name: Gavilán negro
- Family: Accipitridae
- Known Nicknames: Common Black-Hawk, Mangrove Black-Hawk
- Average Length: 43–53 cm / 17–21 in
- Average Weight: 630–1,300 g / 1.4–2.9 lb
- Wingspan: 100–127 cm / 39–50 in
- Key Feature: Broad, black wings and a short tail with a single conspicuous wide white band
- Primary Diet: Carnivore (primarily crabs, fish, reptiles, and amphibians)
- Range: Southwestern United States through Mexico and Central America to northern South America
- Habitat: Riparian woodlands, mangroves, and coastal swamp forests
- Social Structure: Solitary or in monogamous pairs
- Nesting/Breeding: Large stick nests built in tall trees near water sources
- Statut de conservation : Préoccupation mineure (LC)
- Population Trend: Stable
The Common Black Hawk (*Buteogallus anthracinus*) is a striking, stocky raptor easily identified by its uniform sooty-black plumage and exceptionally broad, rounded wings that create a powerful silhouette against the sky. Most distinguished by a singular, bold white band bisecting its short tail and contrasting bright yellow legs and facial skin, this bird is a specialized hunter of riparian and coastal ecosystems. Unlike many of its woodland relatives, the Common Black Hawk has a unique dietary preference for aquatic prey, particularly crabs and amphibians, which it hunts by perching low over water or patrolling muddy banks. Found from the southwestern United States through Central America, its presence is often signaled by a high-pitched, whistling cry that echoes through the mangroves and wooded river canyons it calls home.
Faits amusants
Often nicknamed the "crab hawk," this raptor is a specialized hunter with a particular craving for land crabs and other crustaceans found in mangrove swamps. Unlike many of its relatives that soar high to hunt, it prefers a patient "sit-and-wait" strategy, pouncing from low branches with thick, powerful legs specifically adapted for gripping slippery aquatic prey. Despite its fierce appearance, its voice is surprisingly delicate, consisting of a series of high-pitched, piping whistles that sound more like a songbird than a bird of prey. During courtship, these hawks engage in dramatic "sky-dancing" displays, performing synchronized loops and dives to solidify their pair bonds.
Habitats et répartition
This raptor is strictly associated with water, primarily inhabiting low-lying riparian zones, mangrove swamps, and coastal forests. It is most frequently found along the banks of rivers, streams, and estuaries where mature trees provide suitable nesting sites near aquatic hunting grounds. While it favors wooded areas near fresh or brackish water, it also occupies arid regions provided there are permanent water sources, such as desert oases or canyon streams. Its geographical range extends from the southwestern United States—specifically parts of Arizona, New Mexico, and Texas—southward through Mexico and Central America into northern South America, reaching as far as Peru and Guyana. It is also a resident species across several Caribbean islands, including Cuba, Trinidad, and the Lesser Antilles. While northernmost populations may migrate short distances south during the winter, the majority of individuals throughout the tropical and subtropical portions of their range are non-migratory year-round residents.
Comportements & Reproduction
These birds are primarily solitary or paired during the breeding season, maintaining strong territorial boundaries near coastal or riparian habitats. During courtship, pairs engage in dramatic aerial displays, including high-altitude soaring and synchronized diving accompanied by loud, whistling calls. They are typically monogamous and build large, bulky stick nests lined with green leaves, usually situated high in a tree overlooking water to ensure easy access to aquatic prey. Reproduction typically results in a clutch of one to three eggs, which are incubated primarily by the female while the male provides sustenance. Once the chicks hatch, both parents participate in hunting and feeding, focusing on a diet of crabs, reptiles, and small fish. A notable reproductive strategy involves the selection of nest sites specifically near abundant aquatic food sources to minimize foraging energy and maximize the survival rate of the brood during the demanding nestling period.
Alimentation
The Common Black Hawk is a versatile carnivore with a diet heavily influenced by its proximity to water, often specializing in aquatic and semi-aquatic prey. While it consumes a wide range of small animals including fish, frogs, snakes, and large insects, it is particularly renowned for its fondness for crabs, which form a staple part of its nutrition in coastal and mangrove habitats. This raptor employs an opportunistic hunting strategy, frequently perching on low branches to scan the ground or water before pouncing, and it is even known to walk along the shoreline to forage for crustaceans. Interestingly, these hawks have been observed following grass fires or agricultural machinery to snatch up displaced prey, demonstrating a remarkable ability to adapt their feeding habits to take advantage of immediate environmental changes.
Couleurs
Adult Common Black Hawks feature uniform sooty-black plumage contrasted by bright yellow legs and a yellow cere. Their most distinctive marking is a single broad white band across a short, black tail, tipped with a thin white line. This dark coloration provides camouflage within the deep shadows of their preferred mangrove and riparian habitats, while juveniles differ significantly with streaky brown and buff patterns for concealment in dense vegetation.
