Feather
Feathers are one of the epidermal growths that form the distinctive outer covering, or plumage, on birds and some non-avian theropod dinosaurs. They are considered the most complex integumentary structures found in vertebrates, and indeed a premier example of a complex evolutionary novelty. They are among the characteristics that distinguish the extant Aves from other living groups. Feathers have also been noticed in those Theropoda which have been termed feathered dinosaurs. Although feathers cover most parts of the body of birds, they arise only from certain well-defined tracts on the skin. They aid in flight, thermal insulation, waterproofing and coloration that helps in communication and protection.
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Famous quotes containing the word feather:
“Was ever feather so lightly blown to and fro as this multitude?”
—William Shakespeare (1564–1616)
“Self-pity in its early stage is as snug as a feather mattress. Only when it hardens does it become uncomfortable.”
—Maya Angelou (b. 1928)
“Newspaperman: That was a magnificent work. There were these mass columns of Apaches in their war paint and feather bonnets. And here was Thursday leading his men in that heroic charge.
Capt. York: Correct in every detail.
Newspaperman: He’s become almost a legend already. He’s the hero of every schoolboy in America.”
—Frank S. Nugent (1908–1965)