
Golden Eagle
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Aquila, Species: Aquila chrysaetos
AI-generated identification · may be incorrectFamily: Accipitridae (Hawks, Eagles, and Allies)
- Shape
- Relatively asymmetrical with a broad trailing vane and a narrower leading vane; rounded to slightly tapered tip; slightly curved along the rachis.
- Size
- Estimated at 12 to 15 inches (30-38 cm) in length. This is consistent with a large eagle flight feather; Golden Eagle primaries typically range from 12 to 20 inches.
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Description
A massive, powerful raptor with a wingspan of up to 7.5 feet. Adults are dark brown with a hallmark golden-buff wash on the nape. This feather reflects the immense scale and power of one of the world's most formidable predators.
Colour & Pattern
Uniform golden-brown to dark chocolate brown with subtle 'marbling' or grayish mottling toward the base, typical of sub-adult or adult Golden Eagles. The dorsal surface shows a characteristic golden-bronze sheen in light.
Barb Structure
Tightly interlocked pennaceous barbs transitioning to a small plumulaceous section near the base (calamus); barbs are stiff and provide high aerodynamic lift.
Rachis & Barb Pattern
Thick, sturdy rachis that is pale or cream-colored at the base, darkening to brown toward the tip. Barbs are dense and angled sharply toward the distal end.
Texture & Surface
Very stiff and smooth texture with a glossy, almost waxy surface to aid in water repellency and reduce drag during flight.
Feather Placement
Wing; likely from the mid-section of the wing (inner primary or secondary) given the moderate asymmetry and length.
Key Features
Large size, specific golden-brown hue without the distinct white base found in immature Bald Eagles, and a thick, rigid rachis.
Habitat
Open and semi-open country, mountains, plateaus, and rimrock; avoids heavily forested areas.
Geographic Range
Widespread across the Northern Hemisphere; found throughout North America, Eurasia, and parts of North Africa. In North America, they are most common in the West.
Ecological Role
Apex predator; controls populations of medium-sized mammals like jackrabbits and marmots; serves as an indicator of ecosystem health.
Similar Species
Bald Eagle (immature feathers often have more white/mottling), Turkey Vulture (feathers are darker/blacker and lack the golden sheen).
Interesting Facts
Golden Eagles can reach speeds of up to 150-200 mph during a dive (stoop), making them one of the fastest animals on Earth.
Cultural Significance
Highly sacred in many Native American cultures, symbolising courage and wisdom. Historically used in ceremonial headdresses and fans.
Field Identification Tips
Look for these in late summer during the molt near cliffside nests or high-altitude ridges with updrafts.
Condition Notes
Fair to Good; shows signs of wear at the tip and some separation of the barbs (zipper effect), suggesting it may be a naturally molted feather.