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.
Other articles related to "feather, feathers":
... Several studies of feather development in the embryos of modern birds, coupled with the distribution of feather types among various prehistoric bird precursors, have allowed scientists ... Feather evolution was broken down into the following stages by Xu and Guo in 2009 Single filament Multiple filaments joined at their base Multiple filaments ... Foth re-interpreted stage 2 feathers as crushed or misidentified feathers of at least stage 3, and stage 5 feathers as crushed stage 6 feathers ...
... at 7,344 ft (2,238 m) in Spring Garden, California is the longest of 34 tunnels on the Feather River Route (cf ... Tunnel) and crosses under the drainage divide between the East Branch North Fork Feather River (north portal, 39°53′15″N 120°47′02″W / 39.8 ...
... article is about the song, for the Dutch group see Blue Feather (band) "Blue Feather" is a popular song written in 1909 with music by Theodore F ... In the song the singer is expressing his love for sweet Blue Feather ... The chorus is My sweet Blue Feather we'll be together In stormy weather and bright sunshine The hours are flying, my heart is crying Don't leave me sighing, Blue Feather, mine ...
... Most spellings use the Shu-feather, often twice, the feather being the representation, and feather of Maat ... in the kingdom, the iconographic headdress implies her role, to the one who wears the shuti two-feather adornments ... Preceded by Shu-feather (=Maat-(Maat's feather)) shu-(šw) Shuti (two-feather adornment) (shwti-shuti) Succeeded by official-seated sheps-(šps) (ideogram-det.) Great Hypostyle Hall ...
... The ancient Egyptian Shuti, a two-feather adornment for crowns is part of a series of hieroglyphs for "crowns" usage as a hieroglyph is not as common as the actual crown represented in Egyptian art ... One popular use of the Shuti, two-feather crown is by the god Amun, one of his many crowns he is portrayed wearing ... The tail feathers in this crown are generally straight, and are assumed to be the tail feathers of a falcon ...
Famous quotes containing the word feather:
“Who blows deaths feather? What glory is colour?
I blow the stammel feather in the vein.
The loin is glory in a working pallor.
My clay unsuckled and my salt unborn,
The secret child, I shift about the sea
Dry in the half-tracked thigh.”
—Dylan Thomas (19141953)
“A pun is not bound by the laws which limit nicer wit. It is a pistol let off at the ear; not a feather to tickle the intellect.”
—Charles Lamb (17751834)
“Was ever feather so lightly blown to and fro as this multitude?”
—William Shakespeare (15641616)