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Eurasian Eagle-Owl
Flight feather, likely a secondary flight feather

Eurasian Eagle-Owl

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Strigiformes, Family: Strigidae, Genus: Bubo, Species: Bubo bubo

AI-generated identification · may be incorrect

Family: Strigidae (Typical Owls)

Shape
Symmetrical to slightly asymmetrical vane with a broad, rounded tip and velvety fringes along the leading edge.
Size
Approximately 10 to 14 inches long, broad and sturdy, consistent with a large secondary flight feather from a very large owl species.
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Description

The Eurasian Eagle-Owl is one of the largest living species of owls, characterized by prominent ear tufts, striking orange eyes, and heavily barred plumage that offers supreme stealth while hunting nocturnal prey.

Colour & Pattern

Warm buff, cream, and sandy background heavily barred with dark brown and charcoal wavy bands and vermiculations, providing exceptional camouflage.

Barb Structure

Pennaceous vane with specialized velvety, comb-like fringes on the outer edge designed for silent flight. The barbules possess tiny, hair-like extensions that eliminate aerodynamic noise.

Rachis & Barb Pattern

Strong, thick central rachis that is pale cream or white on the underside, somewhat flexible, with dense barbs extending at a moderate angle.

Texture & Surface

Incredibly soft, velvety, and matte texture designed to absorb sound, lacking the glossy or rigid feel of typical diurnal raptor feathers.

Feather Placement

Wing, specifically a secondary flight feather, determined by its broad shape, lack of pronounced asymmetry typical of outer primaries, and distinctive barring patterns.

Key Features

Large size, warm buff and dark brown barred pattern, and velvety, muffled texture along the edges adapted for silent flight.

Habitat

Found in a wide variety of habitats from northern coniferous forests to rocky mountainous regions, scrublands, and semi-deserts, requiring cliffs or old trees for nesting.

Geographic Range

Widespread across much of Eurasia, spanning from Western Europe, including Spain, eastward across Russia and Asia to the Pacific coast.

Ecological Role

Acts as an apex nocturnal predator, helping to regulate rodent and small mammal populations within its ecosystem.

Similar Species

Could be confused with large hawk feathers or other owl species like the Ural Owl, but distinguished by the distinct color palette and velvety texture.

Interesting Facts

Eurasian Eagle-Owls are apex predators capable of taking prey as large as hares and medium-sized mammals, and their booming territorial calls can carry for miles.

Cultural Significance

Historically used in falconry in some regions and featured in indigenous folklore and art, currently protected under strict wildlife laws.

Field Identification Tips

Look near rocky outcrops, cliff bases, or old stick nests in forested or mountainous regions of Europe and Asia where Eagle-Owls roost.

Condition Notes

Good condition with intact barbs and clear coloration, showing minimal wear or fading.

Notes

Found in Aragón, Spain