Plumage
깃털
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<speciesfyi-glossary slug="plumage"></speciesfyi-glossary>Definition
The complete covering of feathers on a bird, serving functions in flight, insulation, display, and camouflage.
Detailed Explanation
Feather microstructure — interlocking barbules creating a flat vane — is a precise adaptation enabling flight through aerodynamic lift and thrust. Down feathers provide insulation by trapping air; contour feathers streamline the body; flight feathers generate lift. Melanin and carotenoid pigments create colors for camouflage and communication; nanostructural colors (like the blue of kingfishers) arise from light interference. Feather coloration is sexually selected in many species, driving elaborate plumage evolution.