Feathers perform a number of functions for a bird. They are considered the most complex integumentary structures found in vertebrates and a premier example of a complex evolutionary novelty.
Bird S Wing Anatomy Skeleton And Feather
Every bird has feathers and everything that has feathers is a bird.
Bird feathers anatomy. The barbs of the feather hook together to form an air tight seal to resist the wind and also to provide insulation. The feathers of a bird are made up of keratin which is the same substance that hair hooves and beaks are made of. Feathers have a central shaft.
By originating from tracts rather than being randomly distributed feathers can smoothly overlap and conform to the natural contours of the body. The location and the number of tracts varies between species. In most birds the body is divided into areas that contain feather tracts pterylae and areas that do not apteriae.
For example the interlocking velcro like structure on many bird feathers creates the smooth flexible and resilient surface that supports flight and sheds water. The smooth unpigmented base which extends under the skin into the feather follicle is called the calamus. Feathers are one of the most prominent features of a birds anatomy and they are unique to birds.
Feathers are a unique adaptation of birds. The shaft or center spine of the feather is stiff and the tip is flexible for flight. Feathers are epidermal growths that form the distinctive outer covering or plumage on dinosaurs birds and possibly other archosauromorphs.
Feathers are made up of keratin an insoluble protein that is also found in mammalian hair and reptilian scales. Feathers are the most unique aspect of a birds anatomy. Feather anatomy feathers are made out of keratin the same protein found in hair and nails.
As feathers grow they mature into highly branched structures. Understanding feather anatomy at the microscopic level provides insight into how feathers function.
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