Eagle on a frosted limb

by Jeff Swan

Title

Eagle on a frosted limb

Artist

Jeff Swan

Medium

Photograph - Photography

Description

Eagles sit at the top of the food chain, making them more vulnerable to toxic chemicals in the environment, since each link in the food chain tends to concentrate chemicals from the lower link.
A bald eagle's lifting power is about 4 lbs.. Generally, they do not feed on domestic livestock or pets, but they will make use of available food sources. Bald eagles will take advantage of carrion (dead and decaying flesh). Because of its scavenger image, some people dislike the bald eagle. Other people do not care for powerful and aggressive birds. Still other people object merely on the grounds that it is a bird of prey, which kills other animals for food.
Eyesight - An eagle's eye is almost as large as a human's, but its sharpness is at least four times that of a person with perfect vision.
Voice - Shrill, high pitched, and twittering are common descriptions used for bald eagle vocalizations. Eagles do not have vocal cords. Sound is produced in the syrinx, a bony chamber located where the trachea divides to go to the lungs. Bald eagle calls may be a way of reinforcing the bond between the male and female, and to warn other eagles and predators that an area is defended. Bald eagle audio.
Body Temperature - About 106 degrees Fahrenheit (41 degrees Celsius)
Eagles do not sweat, so they need to use other cooling methods such as perching in the shade, panting, and holding their wings away from their body.
Tolerance to cold temperatures - A bald eagle's skin is protected by feathers lined with down. Their feet are cold resistance, consisting of mostly tendon. The outside of the bill is mostly nonliving material, with little blood supply.
eagle's beak Beak - The hook at the tip is used for tearing. Behind the hook, the upper mandible, the edge sharp enough to slice tough skin, over laps the lower, creating a scissors effect. A bald eagle's beak is a strong weapon, but is also delicate enough to groom a mate's feathers or feed a small portion of food to a newly hatched chick. The beak of a female eagle is deeper (distance from top to chin) than the beak of a male. The beak and talons grow continuously, because they are made of keratin, the same substance as our hair and fingernails. The beak of a captive eagle is not warn down naturally, so must be trimmed annually.
eagle talons Talons - Talons are important tools for hunting and defense. Eagles kill their prey by penetrating its flesh with their talons.
Eagles can open and close their talons at will. If an eagle is dragged into the water by a fish too large for the eagle to lift, it is because the eagle refuses to release it. In some cases this is due to hunger.
Page 2 of bald eagle description information: Fidelity, flight, feathers, wings and soaring, maneuvering, flight speed, flight altitude, respiratory system, and more.

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Bald eagle, Image created by Hope Rutledge

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January 8th, 2017

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