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Eurasian Eagle-Owl
Body contour feather or secondary covert

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 vane with a broad, rounded tip and soft margins
Size
Approximately 15-20 cm long, typical for a large contour or covert feather of this massive owl species
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Description

The Eurasian Eagle-Owl is one of the largest living species of owls, characterized by prominent orange eyes, distinct ear tufts, and a powerful, heavily barred plumage. The feather exhibits the hallmark velvety texture of Strigidae feathers, designed for silent predatory ambushes.

Colour & Pattern

Intricate vermiculations and bold dark brown bars on a pale buff and grayish background, providing excellent camouflage

Barb Structure

Plumulaceous at the base with a well-developed downy portion, transitioning to pennaceous with velvety, modified barbules that eliminate flight noise

Rachis & Barb Pattern

Sturdy yet flexible whitish-buff rachis with densely packed barbs extending at a wide angle, featuring soft, velvety fringes

Texture & Surface

Extremely soft, velvety, and matte texture, completely lacking the harsh stiffness of diurnal raptor feathers to ensure acoustic stealth

Feather Placement

Body flank or upperwing covert, adapted for silent flight and thermal insulation

Key Features

Large size, soft velvety pile on the upper surface, and distinct dark brown transverse barring and vermiculation over a warm buff background

Habitat

Found in a wide variety of habitats ranging from northern coniferous forests and taiga to rocky mountainous terrain, steppes, and semi-deserts with rocky outcrops

Geographic Range

Widespread across much of Eurasia, spanning from Western Europe (including France) east across Russia and Siberia to the Pacific coast and Sakhalin

Ecological Role

Acts as an apex nocturnal predator controlling populations of small to medium mammals and birds, serving as an indicator of ecosystem health

Similar Species

Long-eared Owl (Asio otus) and Tawny Owl (Strix aluco), though both are significantly smaller with different proportions and barring scales

Interesting Facts

Eurasian Eagle-Owls are apex avian predators capable of taking prey as large as hares, foxes, and even other medium-sized raptors. Their deep, resonant hoots can be heard for miles across their territory.

Cultural Significance

Historically used in falconry as a lure to trap other raptors, and featured widely in European folklore as a symbol of wisdom or an omen of doom

Field Identification Tips

Look for the exceptionally soft, silent-flight adaptations, distinctive heavy barring pattern, and large size when searching near rocky roosts or mature wooded cliffs

Condition Notes

Good condition, fresh appearance with intact barbs and minimal fraying at the edges

Notes

Allier, France