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feather, the component structure of the outer covering and flight surfaces of all modern birds. Unique to birds, feathers apparently evolved from the scales of birds’ reptilian ancestors. The many different types of feathers are variously specialized for insulation, flight, formation of body contours, display, and sensory reception. Feather variations Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates [1][2] and an example of a complex evolutionary novelty. [3] They are among the characteristics that distinguish the extant birds from other living groups. [4] Although feathers cover most of the bird's body, they arise only from certain well-defined ... Tail feathers Most tail feathers, or rectrices rectricesRECT-ri-seestail feathers, feature an interlocking microstructure similar to wing feathers. Arranged in a fan shape, these feathers support precision steering in flight. Typically, birds have six pairs of feathers on the tail, which display increasing levels of asymmetry toward the outer ... Feathers are a special adaptation in birds and come in a wide range of shapes, sizes, and colors. In this guide, we’ll explore the various types, why birds have them, feather anatomy, and much more.