
Bald Eagle (American Eagle)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Haliaeetus, Species: H. leucocephalus
Family: Accipitridae (Hawks, Eagles, and Kites)
- Shape
- Asymmetrical vane with a curved, tapered profile and a rounded to slightly pointed tip; significant emargination on the inner vane near the distal portion
- Size
- Approximately 14-16 inches long, consistent with a large primary flight feather from an adult Bald Eagle; typical primaries for this species range from 12 to 18 inches depending on exact wing position
- Rarity
- Common in suitable coastal and riverine habitats across North America, having made a remarkable recovery from endangered status
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Description
The Bald Eagle is North America's iconic raptor, instantly recognizable by its striking white head and tail contrasting with a dark brown body and wings, accompanied by a bright yellow bill and feet. With a massive wingspan often exceeding 7 feet, they are powerful apex predators and master soarers, utilizing thermal currents to survey waterways for fish, waterfowl, and carrion.
Colour & Pattern
Solid, deep dark brown to near-black coloration with melanin-based pigmentation throughout the vane; starkly contrasting with a very robust, pale ivory-white to yellowish rachis
Barb Structure
Tightly interlocked pennaceous structure with strong, rigid barbs and firmly attached barbules featuring microscopic hooklets (barbicels) for aerodynamic efficiency; no afterfeather
Texture & Surface
Stiff, smooth, and matte to slightly glossy finish; highly rigid vane designed to withstand significant air pressure during flight, with smooth leading and trailing edges
Key Features
Large size, very thick and prominent pale ivory-white rachis contrasting sharply with dark brown-to-black pennaceous barbs, and strong asymmetry with pronounced outer vane emargination characteristic of large raptor primaries
Habitat
Found near large bodies of open water with old-growth trees or tall cliffs for nesting, including lakes, reservoirs, rivers, coasts, and estuaries
Geographic Range
North America, ranging from Alaska and Canada down through the contiguous United States and into northern Mexico; largely resident with northern populations undertaking seasonal southward migrations
Ecological Role
Apex avian predator playing a crucial role in maintaining aquatic and riparian ecosystem health by removing sick or dead fish and regulating prey populations; serves as a vital ecological indicator species
Similar Species
Golden Eagle (Aquila chrysaetos), which features dark brownish-black feathers that often show subtle lighter tawny or golden-brown barring or bases, particularly on covert or juvenile plumage, and a slightly different rachis coloration
Interesting Facts
Bald Eagles can reach flight speeds of up to 35-43 mph during normal flight and up to 100 mph during a dive; their nests, called eyries, are among the largest of any bird, sometimes weighing over two tons and used for decades
Condition Notes
Good condition with intact barbs and a solid rachis, showing minimal wear or fraying, likely a naturally molted feather found outdoors