Long-eared Owl

The Long-eared Owl (Asio otus) is one of the most cryptically colored and elusive raptors of the Northern Hemisphere. Extremely slender for an owl, it spends its daylight hours expertly camouflaged in dense foliage, often compressing its body to mimic a broken tree branch. When night falls, this strictly nocturnal hunter emerges to glide silently over open fields and grasslands, relying on its hearing to pinpoint small mammals beneath the cover of vegetation.

Physical Attributes

• Ear Tufts: Strikingly long, black-and-buff tufts set close together in the center of the head. These are display feathers, not actual ears.
• Facial Disc: Broad, distinct, and warm orange-buff, outlined in black and white with vertical white markings running between the eyes.
• Eyes: Large, bright yellow-orange to deep orange.
• Plumage: Intricate patterning of gray, black, brown, and buff. The breast and belly feature prominent vertical dark streaks crossed by fine horizontal bars.
• Structure: Remarkably slender body, long wings, and a square-shaped head.

Similar Species

• Short-eared Owl: Easily distinguished by its open-country habits, tiny and rarely visible ear tufts, dark smudge-like 'mascara' around the eyes, and a paler buff tone.
• Great Horned Owl: Considerably larger and bulkier, with widely spaced ear tufts, a white throat patch, and a much heavier bill.
• Screech-Owls (Eastern/Western): Much smaller (about half the size) with different facial patterns and more localized ear tufts at the corners of the head.

Habitat and Range

Long-eared Owls require a mosaic of habitats: dense nesting and roosting cover situated directly next to wide open spaces for hunting.

• Roosting Areas: Dense coniferous groves, cedar thickets, pine plantations, and thick deciduous scrub.
• Hunting Areas: Grasslands, prairies, meadows, pastures, and agricultural fields.

Distribution and Migration

This species holds an expansive range across North America, Europe, northern Asia, and parts of North Africa. Populations in northern Canada, northern Europe, and Siberia are strongly migratory, moving southward in autumn to escape heavy snow cover, while southern populations remain resident year-round.

Behavior and Ecology

• Hunting Style: Strictly nocturnal. They hunt by quartering (flying low back and forth over open ground) and dropping onto prey from a hover or a low perch. They possess highly asymmetrical ear openings, allowing them to pinpoint sound in absolute darkness.
• Social Structure: Unusually social for owls, they gather in communal winter roosts of up to 10 to 100 birds in dense groves of conifers or brush.
• Defensive Posture: When threatened, the owl elongates its body, pulls its feathers tight, raises its ear tufts, and partially closes its eyes, perfectly mimicking a dead tree branch (the 'squeeze-owl' posture).
• Vocalization: Quite vocal during the breeding season. The male's territorial call is a deep, resonant, single 'hoo' repeated every few seconds. Females issue a nasal, buzzy 'sheeooh' call, and both sexes can produce cat-like meows, barks, and bill-snaps.
• Nesting: They do not build their own nests. Instead, they occupy abandoned stick nests built by crows, magpies, ravens, hawks, or squirrels, usually situated high in pine or deciduous trees.