Definition of contour feather in English:

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contour feather

noun

Any of the mainly small feathers which form the outline of an adult bird’s plumage.
Example sentences
  • A set of avian feathers have even been found, including a superb fragment of a contour feather.
  • They often share a follicle with a contour feather.
  • The insulation theory is based on the conclusion that primitive feathers were a type of contour feather.
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