Feathers are unique to birds. Are large stiff flight feathers of the tail.
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Parts of an adult male rooster.

Feather anatomy. Over time the quality of each feather deteriorates and thus compromises its ability to serve the bird in flight or to provide insulation qualities. Parts of a feather. That is everything that has feathers is a bird.
Are small contour feathers of the wing and the tail. Anatomy of a feather. They are considered the most complex integumentary structures found in vertebrates and a premier example of a complex evolutionary novelty.
Notice that the two vanes. The plumed part of the feather that grows from the central shaft. These are the predominant feather covering the body.
They are among the characteristics that distinguish the extant birds from other living groups. The vanes are like the canvas sails on a mast. Pronounced kal e mes the large hollow portion of the shaft that attaches the feather to the birds skin or bone.
Bristle long stiff feathers around the birds mouth or eyes the function of bristle feathers is not known feathers suffer wear and tear as they are exposed to the elements. Are large stiff flight feathers of the wing. Understanding feather anatomy at the microscopic level provides insight into how feathers function.
Types of feather contour feathers. As feathers grow they mature into highly branched structures. Calamus or quill.
For example the interlocking velcro like structure on many bird feathers creates the smooth flexible and resilient surface that supports flight and sheds water. Figure 1 shows feathers of various sizes shapes colors and purposes on an adult male rooster. It doesnt have any barbs on it.
Birds come in different shapes and sizes but one thing they have in common is feathers.
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