Bald Eagle

The Bald Eagle is one of North America's largest raptors, famously known for the white head and tail of the adults contrasting with dark brown bodies. They have a massive wingspan (up to 7.5 feet) and a heavy, yellow beak. This feather is a primary engine of their flight, providing the necessary thrust and lift for their heavy soaring and diving.

Uniformly dark chocolate brown to brownish-black on the vanes, which is characteristic of adult and late-subadult Bald Eagles. The rachis transitions from a pale, almost translucent cream at the calamus to a dark brown along the distal portion.

Densely packed pennaceous barbs designed for aerodynamic stability. The leading edge barbs are short and stiff to maintain wing shape, while the trailing barbs are longer and more flexible. A small plumulaceous section (downy) is visible at the very base near the calamus.

Stiff and smooth with a slight oily sheen for water repellency. The leading edge (vane) feels extremely rigid, while the trailing edge is softer. The surface has a matte to semi-gloss finish typical of large raptors.

Extreme asymmetry of the vanes, massive size over 12 inches, dark uniform coloration, and a very thick, pale calamus/rachis base.

Typically found near large bodies of open water with an abundance of fish, including lakes, rivers, marshes, and coastal areas. Requires old-growth trees for nesting and perching.

Common across most of North America, from Alaska and Canada to northern Mexico. Many populations are residents, while northern inland birds migrate to southern coastlines or ice-free waters in winter.

Apex predator and opportunistic scavenger. They play a vital role in regulating fish and waterfowl populations and serve as an indicator species for environmental toxins like mercury or lead.

Golden Eagle (feathers are usually more marbled or darker with a different rachis base), Turkey Vulture (feathers are more silvery-gray underneath and thinner), or immature Bald Eagles (which would show white mottling/spots).

Bald Eagles can soar for hours using thermal updrafts and have eyesight four to eight times stronger than that of a human. They are not actually 'bald'; the name comes from an older English word 'balde' meaning white-headed.

Good to Excellent. The vanes are largely intact with minor fraying at the tip, suggesting a naturally molted feather rather than one lost through trauma or scavenging.

Below an eagle perch