Bald Eagle Wing, Articulated

SC-068-67-A $150.00

The wings of a Bald Eagle follow the classic vertebrate plan for the upper limb with some modifications for flight, such as modified joints for folding and locking of wings, fused wrist bones and a reduction of digits.

Avian skeletons include several unique features that enable flight. It is lightweight, often weighing less than the bird's feathers. Certain bones, called pneumatic bones, are composed of air-sacs supported by cross-struts, which reduces the bone's weight while maintaining its structural rigidity.

There are four basic bird wing shapes, each suited to specific environments and type of flight: Passive Soaring Wings for passively using thermal updrafts over land to soar, glide and circle; Active Soaring Wings for actively seeking air currents over oceans to travel long distances, Elliptical Wings for predator evasion, fast take offs, and short bursts of speed with high maneuverability, and High Speed Wings for prolonged high speed travel. There is one additional specialized shape, for hovering.

The Bald Eagle wing is a classic example of the Passive Soaring Wing shape. Usually broad and relatively short wings with feathers at the end which create slotting tips that catch rising hot air currents over land. Birds with this wing shape include eagles, most hawks, and storks which use them for navigating long migration routes.

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