Feather - Wikipedia
Feathers are among the most complex integumentary appendages found in vertebrates and are formed in tiny follicles in the epidermis, or outer skin layer, that produce keratin proteins.

Everything You Need To Know About Feathers
Feather Function: What do feathers do? Each feather on a bird’s body is a finely tuned structure that serves an important role in the bird’s activities. Feathers allow birds to fly, but they also help them show off, blend in, stay warm, and keep dry.

FEATHER | definition in the Cambridge English Dictionary
FEATHER meaning: 1. one of the many soft, light things that cover a bird's body, consisting of a long, thin, central…. Learn more.

feather - WordReference.com Dictionary of English
Idioms in fine or high feather, in good form, humor, or health: feeling in fine feather. Idioms ruffle someone's feathers, to anger, upset, or annoy (another person).

Feather Anatomy and Function - ThoughtCo
Feathers are special body coverings that help birds fly and protect them from the weather. Bird feathers are made of keratin, the same stuff in hair and scales. Birds replace old feathers with new ones to keep them strong and useful. Feathers are unique to birds.

feather - Wiktionary, the free dictionary
Noun feather (plural feathers) A branching, hair-like structure that grows on the bodies of birds, used for flight, swimming, protection and display.

FEATHER definition and meaning | Collins English Dictionary
a bird's feather or artificial substitute fitted to an arrow to direct its flight

FEATHER Definition & Meaning | Dictionary.com
A feather is made of a horny substance and has a narrow, hollow shaft bearing flat vanes formed of many parallel barbs. The barbs of outer feathers are formed of even smaller structures (called barbules) that interlock.

Feather Definition & Meaning | Britannica Dictionary
FEATHER meaning: 1 : any one of the light growths that make up the outer covering of the body of a bird; 2 : an achievement or honor that you can be proud of

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