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Golden Eagle
Flight feather (Remiges), likely a Secondary or inner Primary

Golden Eagle

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Aquila, Species: Aquila chrysaetos

AI-generated identification · may be incorrect

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Broadly asymmetrical with a slightly rounded to squared tip; the outer vane is narrower than the inner vane.
Size
Approximately 10 to 14 inches (25-35 cm) depending on exact placement; consistent with the large wingspan of an apex raptor.
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Description

A massive, powerful raptor with a wingspan reaching over 7 feet. Adults are dark brown with golden-tipped feathers on the nape, while immatures show distinct white patches on wings and tail.

Colour & Pattern

Dark chocolate brown base with characteristic pale tawny or whitish mottling and marbling toward the base and center of the vane; typical of immature or sub-adult plumage.

Barb Structure

Tightly interlocked pennaceous barbs providing a rigid and aerodynamic surface; robust barbules with strong hooklets for flight integrity.

Rachis & Barb Pattern

The rachis is thick, sturdy, and dark brown to black on the dorsal side; barbs are densely packed and emerge at an acute angle to provide maximum lift.

Texture & Surface

Stiff, smooth, and slightly glossy on the upper surface; the underside has a more matte, silvery-brown appearance.

Feather Placement

Wing; the asymmetry and size suggest it is a secondary feather or a mid-primary from the wing of a large raptor.

Key Features

Large size, dark brown coloration with distinct irregular pale mottling at the base of the barbs, and a very thick, rigid central rachis.

Habitat

Open and semi-open country, mountains, plateaus, and cliffs; avoids heavily forested areas in favor of wide-ranging hunting grounds.

Geographic Range

Widespread across the Northern Hemisphere, including North America, Eurasia, and parts of North Africa; mostly resident in mountainous regions.

Ecological Role

Apex predator; controls populations of small to medium mammals like jackrabbits and marmots; sensitive indicator of terrestrial ecosystem health.

Similar Species

Bald Eagle (immature feathers lack the specific tawny marbling and often show more extensive, blotchy white), Turkey Vulture (feathers are lighter, more uniform brownish-grey).

Interesting Facts

Golden Eagles are capable of taking down prey as large as deer and are known for their incredible diving speeds, which can exceed 150 miles per second.

Cultural Significance

Highly sacred in many Native American cultures, symbolizing courage and strength; feathers are used in traditional headdresses and ceremonies.

Field Identification Tips

Look for these in mountainous or hilly terrain near cliff faces or high-elevation meadows, especially during late summer molting periods.

Condition Notes

Fair to Good; shows significant wear and fraying at the tips (apical tattering), suggesting it was molted after a full season of use.