American Barn Owl

En bref

Nocturne
  • Scientific Name: Tyto furcata
  • Spanish Name: Lechuza común
  • Family: Tytonidae
  • Known Nicknames: Common Barn Owl, Monkey-faced Owl, Ghost Owl
  • Average Length: 33–39 cm / 13–15 in
  • Average Weight: 430–620 g / 15–22 oz
  • Wingspan: 107–110 cm / 42–43 in
  • Key Feature: Heart-shaped white facial disc with dark eyes
  • Primary Diet: Carnivore (primarily small rodents)
  • Range: Throughout much of the Americas, from southern Canada to southern South America, excluding dense forests and high mountains
  • Habitat: Open and semi-open habitats including farmlands, grasslands, marshes, and woodlands near human structures
  • Social Structure: Solitary (except during breeding season)
  • Nesting/Breeding: Tree cavities, barns, silos, cliff crevices, and nest boxes
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : En baisse

The American Barn Owl (*Tyto furcata*) is a master of silent flight, distinguished by its heart-shaped, white facial disc that acts like a radar dish to funnel sound to its asymmetrically placed ears, granting it the most acute hearing of any terrestrial predator. Unlike the typical "hoot" of other owls, it emits a piercing, rasping shriek that echoes through its preferred habitats of farms, grasslands, and open woodlands across the Americas. Its ghostly appearance is defined by a pale, golden-buff back and wings, stark white underparts, and long, slender legs, all designed for a nocturnal life of hunting rodents. A special feature is its unique ability to swallow prey whole, later regurgitating compact pellets of fur and bone, providing scientists with a clear record of its diet and ecological role.

Faits amusants

American barn owls have asymmetrical ear openings—one higher, one lower—that allow them to triangulate prey sounds with pinpoint accuracy, even in total darkness. They swallow small rodents whole, then regurgitate neat, compact pellets of fur and bones, which scientists often dissect to study local rodent populations. Unlike most owls, they don’t hoot; instead they emit a long, eerie, rasping hiss or scream, often described as a “shriek” that can spook hikers at night. Their ghostly white underbellies and silent, fringed wing feathers make them nearly invisible as they glide low over fields, sometimes hovering like a kestrel before striking. A quirky behavior: when threatened, they will rock back and forth and hiss loudly, a display meant to mimic a venomous snake.

Habitats et répartition

The American Barn Owl inhabits a wide variety of open and semi-open habitats, including grasslands, agricultural fields, marshes, deserts, and scrublands, where it hunts for small mammals. It requires structures for roosting and nesting, such as tree cavities, cliff crevices, abandoned barns, silos, and nest boxes, and is often found near human settlements. Its geographical range is extensive, covering most of the Americas from southern Canada, through the United States and Mexico, into Central America, and across South America down to Tierra del Fuego, including many Caribbean islands. It is absent only from dense, unbroken forests, high alpine zones, and extreme northern latitudes.

Comportements & Reproduction

American Barn Owls are generally monogamous, with pairs often remaining together for multiple breeding seasons. Their social structure is largely solitary outside of the nesting period, though they may tolerate loose colonies in areas with abundant prey. Courtship involves the male performing aerial displays, such as high circling flights and wing-clapping, while also offering food to the female to strengthen the pair bond. Unlike many owls, they do not build their own nest; instead, they lay their eggs directly on a bare surface in cavities like abandoned buildings, tree hollows, or nest boxes. A unique reproductive strategy is their ability to breed in response to food availability rather than strict seasons, sometimes producing two or even three broods in a single year when rodent populations are high. The female incubates a clutch of 4–7 eggs for about 30 days, while the male provides all food. Chicks hatch asynchronously, giving older siblings a size advantage that can lead to siblicide during food shortages, a strategy that ensures at least some offspring survive in lean times. The young fledge at around 50–55 days but remain dependent on parents for several more weeks.

Alimentation

The American Barn Owl is a strict carnivore, feeding almost exclusively on small mammals, with rodents making up the vast majority—up to 90% or more—of its diet. Its primary prey includes voles, mice, shrews, and rats, though it will occasionally take small birds, reptiles, or insects if rodents are scarce. An interesting fact is that this owl swallows its prey whole or in large chunks, then later regurgitates compact pellets containing the indigestible fur and bones, which scientists and naturalists study to understand local small mammal populations. Additionally, its specialized facial disc funnels sound to its ears with such precision that it can hunt in complete darkness, locating prey solely by the rustling sounds they make.

Couleurs

The American Barn Owl has a heart-shaped white facial disc, often bordered by a thin brown edge, with dark eyes. Its upperparts are a mix of golden-buff and gray with fine black and white speckles, while the underparts are white to pale buff with small, sparse dark spots. This countershaded plumage provides excellent camouflage against tree bark and open fields during nocturnal hunting.