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Bald Eagle
Down feather / Semiplume

Bald Eagle

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Haliaeetus, Species: H. leucocephalus

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Fluffy, irregular, plumulaceous outline with a reduced or flexible rachis
Size
Approximately 2-3 inches in length, typical of body down or under-plumage from a large raptor
Rarity
Common in suitable habitat due to successful conservation recovery
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Description

A fluffy white down feather resting among volcanic rock, designed primarily for insulation rather than flight. The Bald Eagle is North America's iconic raptor, easily recognized by its snow-white head and tail contrasting with a dark brown body.

Colour & Pattern

Uniform grayish-white to pristine white coloration without any distinct banding or pigmentation, typical of insulating down beneath the contour feathers

Barb Structure

Plumulaceous (loose, soft barbs lacking effective hooklets, allowing them to trap air for thermal insulation)

Texture & Surface

Soft, fluffy, and silky to the touch, lacking any rigid vane structure

Key Features

Pure white or grayish-white coloration, completely plumulaceous structure with no interlocking barbs, soft and fluffy texture

Habitat

Near large bodies of open water with old-growth trees for nesting and perching

Geographic Range

North America, ranging from Alaska and Canada down through the contiguous United States and into Mexico

Ecological Role

Apex avian predator that helps maintain healthy aquatic ecosystems by removing sick or dead fish and small mammals

Similar Species

Other large raptors such as Golden Eagles or large gulls, though pure white down from adult Bald Eagles is often distinctive in size and context

Interesting Facts

Bald Eagles can dive for fish at speeds up to 100 miles per hour and build the largest tree nests recorded for any animal species

Condition Notes

Good condition, intact structure, showing typical wear for a natural molt found outdoors