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Eurasian Sparrowhawk (Northern Sparrowhawk)
Tail feather (rectrix), specifically one of the central or lateral tail feathers

Eurasian Sparrowhawk (Northern Sparrowhawk)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Accipiter, Species: Accipiter nisus

AI-generated identification · may be incorrect

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Symmetrical to slightly asymmetrical, elongated with a gently rounded tip, featuring clear, transverse dark barring.
Size
Approximately 5 to 7 inches long, consistent with a medium-sized raptor tail feather, matching the typical proportions of a female Eurasian Sparrowhawk.
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Description

A classic raptor tail feather displaying striking dark brown and pale barring. The Eurasian Sparrowhawk is a small, agile ambush predator with short rounded wings and a long tail designed for high-speed woodland navigation.

Colour & Pattern

Rich chocolate-brown or slate-grey base with distinct, evenly spaced pale greyish-white or buff transverse bars across both vanes, creating a classic raptor tail-banding pattern.

Barb Structure

Tightly interlocked pennaceous structure with strong barbs and barbules featuring functional hooklets, providing aerodynamic stability. No prominent afterfeather.

Rachis & Barb Pattern

Sturdy, central cream-to-brown rachis that is slightly convex on the upper surface and ridged underneath. Barbs are densely packed and angled uniformly along the shaft.

Texture & Surface

Smooth, firm, and matte in appearance with a stiff, resilient vane designed to withstand high winds and friction during flight maneuvers.

Feather Placement

Tail (rectrix), determined by the rigid structure, symmetrical shape, and characteristic alternating dark and light barred pattern typical of raptor tail feathers used for steering.

Key Features

Distinct alternating dark brown and pale greyish-white transverse bars, elongated symmetrical shape, and stiff pennaceous barbs characteristic of an Accipiter rectrix.

Habitat

Woodlands, forests, forest edges, agricultural land with scattered trees, parks, and suburban gardens.

Geographic Range

Widespread across temperate and subtropical parts of the Palearctic realm, including Europe, Asia, and parts of North Africa.

Ecological Role

Acts as an apex avian predator in woodland ecosystems, helping to regulate small bird populations and maintain ecological balance.

Similar Species

Eurasian Kestrel (Falco tinnunculus) or Cooper's Hawk (Accipiter cooperii), though distinguished by specific bar width, proportions, and geographic distribution.

Interesting Facts

Female Eurasian Sparrowhawks are significantly larger than males—a classic case of reverse sexual size dimorphism in raptors, allowing them to hunt larger prey.

Cultural Significance

Historically used in falconry and revered by indigenous cultures, though strictly protected today under modern wildlife legislation.

Field Identification Tips

Look near woodland perches, roosting sites, or pluck posts where raptors consume prey, particularly during the late summer molt season.

Condition Notes

Good condition with intact barbs and minimal fraying at the tip, showing a healthy, fully grown feather.

Eurasian Sparrowhawk (Northern Sparrowhawk) | Feather Identifier