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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. Unlike the hair of most mammals, feathers do not cover the entire skin surface of birds but are arranged in symmetrical tracts (pterylae) with areas of bare skin (apteria) between. The latter may contain the small soft feathers called down. The typical feather consists of a central shaft (rachis), with serial paired

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Contemporary Art – Sydney & Berlin

Golden Duckwing OEG Cock Wheaten OEG Hen Oxford Style Ginger OEG Cock Black Breasted Red OEG Hen When I mention this blog to my ...

Golden Duckwing OEG Cock Wheaten OEG Hen Oxford Style Ginger OEG Cock Black Breasted Red OEG Hen When I mention this blog to my ...