
Eurasian Eagle-Owl
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Strigiformes, Family: Strigidae, Genus: Bubo, Species: Bubo bubo
AI-generated identification · may be incorrectFamily: Strigidae (Typical Owls)
- Shape
- Symmetrical vane with a broad, rounded tip and velvety specialized fringe on the leading edge
- Size
- Approximately 10 to 12 inches long, consistent with a large wing flight feather from a major apex nocturnal raptor
Found a feather like this?
Identify any feather from a photo, free.
Description
The Eurasian Eagle-Owl is one of the world's largest and most powerful owls, characterized by prominent orange ear tufts, brilliant bright orange eyes, and powerful talons. This magnificent flight feather features the classic velvety modification common to owls, allowing them to hunt silently in total darkness.
Colour & Pattern
Rich tawny-brown base with distinctive, bold dark brown to blackish transverse bars and fine vermiculations across the vane
Barb Structure
Modified pennaceous structure with velvety pile and fringe-like barbules designed for silent flight; minimal hooklets at edges, intact barbs with slight fraying at the tip
Rachis & Barb Pattern
Sturdy, pale ivory-colored, slightly curved central rachis with high-density barbs angling outwards at a uniform slope, featuring regular dark brown horizontal banding
Texture & Surface
Remarkably soft, velvety, and matte texture covered with a fine downy pile across the surface to dampen sound during flight
Feather Placement
Wing (primary flight feather) determined by overall curvature, robust central shaft, and specialized serrated leading edge characteristic of owl primaries
Key Features
Large size, striking bold dark brown and tawny-buff banding, pale robust rachis, and the specialized velvety texture on the upper surface for silent acoustic flight
Habitat
Rocky mountainous areas, cliffs, coniferous forests, taiga, and open semi-deserts with rocky outcrops
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 avian predator regulating populations of small to medium-sized mammals and birds, serving as a primary indicator of healthy, undisturbed ecosystems
Similar Species
Long-eared Owl (Asio otus) and Tawny Owl (Strix aluco), but both are significantly smaller with shorter, narrower flight feathers
Interesting Facts
Eurasian Eagle-Owls are apex nocturnal predators capable of taking prey as large as hares, foxes, and other raptors. Their unique asymmetrical ear openings allow them to pinpoint prey entirely by sound.
Cultural Significance
Historically associated with wisdom, mystery, and occult folklore in European cultures. Feathers are sometimes collected by researchers and naturalists under strict regulation.
Field Identification Tips
Look for large, boldly barred brown and buff owl feathers with a velvety texture near cliff faces, rocky outcrops, or large roosting pine trees in mountainous or forested terrain
Condition Notes
Good condition with minor wear at the extreme distal tip, intact rachis, and well-preserved coloration showing typical sun-exposure tones
Notes
Found in Aragón, Spain, the texture of the feather is softer, with a slight fluff covering the entire feather in the front side