Feather Identifier app iconFeather Identifier
Eurasian Eagle-Owl
Primary flight feather (Remex)

Eurasian Eagle-Owl

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

Family: Strigidae (Typical Owls)

Shape
Asymmetrical with a broad, rounded tip and a distinct notch on the leading edge (emargination).
Size
Estimated 25–30 cm in length. This matches the large scale of a primary from an Eagle-Owl, which is one of the largest owls in the world.
Rarity
Uncommon but widespread. While not globally endangered, they are localized and elusive, making a found feather a significant discovery.
Learn more about Eurasian Eagle-Owl in the encyclopedia →

Found a feather like this?

Identify any feather from a photo, free.

Identify a feather

Description

This is a massive feather from an Eurasian Eagle-Owl, the apex nocturnal predator of the Old World. The bird boasts a wingspan up to 6 feet and is famous for its prominent ear tufts and striking orange eyes. The feather reflects its lifestyle: silent, powerful, and perfectly camouflaged.

Colour & Pattern

Rich tawny-buff base color with bold, dark brown/black transverse bands (barring). The dark bands are roughly equal in width to the lighter spaces, a hallmark of large Bubo species.

Barb Structure

Densely pennaceous across most of the vane with a 'fimbriate' or velvety leading edge designed for silent flight. The base shows small plumulaceous barbs.

Texture & Surface

Extremely soft and velvety to the touch. This soft dorsal pile (comprising specialized barbules) damps the sound of airflow, allowing for silent predation.

Key Features

Large size, distinct tawny-orange and black barring, velvety 'silent-flight' surface texture, and an asymmetrical primary shape.

Habitat

Diverse habitats including rocky mountains, cliffs, coniferous forests, and semi-deserts; requires suitable nesting ledges and ample prey.

Geographic Range

Found throughout much of Europe and Asia, from Scandinavia and Spain to Japan and the Himalayas. Mostly a non-migratory resident species.

Ecological Role

Apex predator; controls populations of rodents, rabbits, and smaller predators. Its presence indicates a healthy, biodiverse ecosystem.

Similar Species

Great Horned Owl (Bubo virginianus) has similar barring but is smaller and found in North America. Great Grey Owl feathers have denser, finer barring and lack the warm tawny tones.

Interesting Facts

The Eurasian Eagle-Owl is capable of hunting prey as large as roe deer fawns or other large birds of prey like Buzzards, thanks to its immense crushing power in its talons.

Condition Notes

Good to Excellent. The vane is intact with minimal fraying. It appears to be a naturally molted feather rather than one lost to trauma or predation.