Black-and-white Owl

Quick Facts

Nocturnal
  • Scientific Name: Strix nigrolineata
  • Spanish Name: Búho blanquinegro
  • Family: Strigidae
  • Known Nicknames: Black-and-white Wood-Owl
  • Average Length: 35–40 cm / 14–16 in
  • Average Weight: 400–535 g / 14.1–18.9 oz
  • Wingspan: 75–91 cm / 30–36 in
  • Key Feature: Dense horizontal black and white barring on the underparts and a bright yellow-orange bill
  • Primary Diet: Carnivore (Insects, small mammals, and bats)
  • Range: Central Mexico through Central America to Colombia, Ecuador, and Venezuela
  • Habitat: Humid lowland forests, forest edges, and mangroves
  • Social Structure: Solitary or Paired
  • Nesting/Breeding: Tree hollows or abandoned nests
  • Statut de conservation : Préoccupation mineure (LC)
  • Population Trend: Stable

The Black-and-white Owl (*Strix nigrolineata*) is a striking nocturnal raptor native to the humid forests and mangroves of Central and South America, renowned for its bold, monochromatic plumage. This medium-sized owl is instantly recognizable by the dense, horizontal black and white barring that covers its entire body, providing exquisite camouflage against the dappled moonlight of the canopy. Its distinctive soot-colored facial disk lacks the "ear" tufts common in other species, instead highlighting its deep, dark eyes and a vibrant yellow-to-orange bill and feet that provide a sharp splash of color. An enigmatic inhabitant of the tropical night, it is known for its rapid, rhythmic hooting and its specialized hunting prowess, silently preying upon large insects and small vertebrates under the cover of darkness.

Faits amusants

Renowned for their aerial agility, these owls are specialized bat hunters, often snatching their prey mid-flight with remarkable precision. Despite their size, they possess an unusual appetite for large insects like beetles and katydids, which they hunt under the cover of the tropical canopy. Their vocalizations are particularly striking, featuring a series of rapid, resonant hoots that sound uncannily like a deep, rhythmic laugh. Lacking ear tufts, their perfectly round heads and bold, monochromatic barring provide exceptional camouflage against the high-contrast shadows of the moonlight. Furthermore, they are famously territorial and have been known to aggressively dive-bomb intruders to defend their nesting sites.

Habitats et répartition

This species is primarily distributed across Central and South America, stretching from central Mexico through Panama and into the northern regions of South America, including Colombia, Ecuador, Venezuela, and Peru. It is most commonly found in lowland areas, though its range can extend into mountain foothills at elevations up to 2,400 meters. Its preferred habitats consist of humid evergreen forests, tropical rainforests, and mangrove swamps. While it favors dense primary forests, it is adaptable enough to inhabit forest edges, gallery forests, and even shaded plantations. These owls typically stay within the middle to upper canopy levels and are often found near water sources or in areas with thick vegetation that provides adequate cover for daytime roosting.

Comportements & Reproduction

Primarily nocturnal and highly territorial, this species is often found in monogamous pairs that remain together throughout the year. They communicate through a series of resonant, low-pitched hoots to maintain territory boundaries and reinforce pair bonds. While they are solitary hunters during the night, focusing on a diet of large insects and small vertebrates, their social structure revolves around a stable partnership centered on a specific home range within humid forest canopies. During the breeding season, which often coincides with the local dry season, the female typically lays one or two eggs in tree cavities or repurposed nests of other large birds. Incubation is handled almost exclusively by the female, while the male assumes the role of provider, hunting and delivering food to the nest. These owls exhibit fierce parental care, aggressively defending the nesting site against intruders through diving flights and intimidating vocalizations until the offspring are fully fledged and independent.

Alimentation

The Black-and-white Owl is a versatile nocturnal carnivore with a diet primarily composed of large insects and small vertebrates. It frequently consumes beetles, grasshoppers, and moths, but it also targets small mammals such as rodents and bats, as well as various amphibians and small birds. An interesting aspect of its hunting behavior is its proficiency at capturing bats mid-air, often positioning itself near fruiting trees or roosting sites to intercept them. Unlike many other large owls that rely more heavily on mammalian prey, this species maintains a significant reliance on invertebrates, showcasing a dietary flexibility that allows it to thrive in diverse tropical forest environments.

Couleurs

The Black-and-white Owl is characterized by its soot-black upperparts and white underparts covered in dense, fine black horizontal barring. Its dark facial disk is framed by distinct white eyebrows and a pale ruff, contrasting sharply with its bright yellow bill and feet. This bold, monochromatic striping serves as disruptive camouflage, breaking up the bird's silhouette against the dappled light and deep shadows of the tropical canopy.