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Coloured SEM of barbules on a swallow feather
Coloured SEM of barbules on a swallow feather
Feather barbules. Coloured scanning electron micrograph (SEM) of barbule hooks on a feather from a swallow, (Hirundo sp.). The flat broad vane of a feather is formed by comb-like rows of filaments called barbs, which project from either side of a central shaft. Each barb has rows of minute filaments called barbules, the barbules on one side bear hooks, while those on the other have a groove. The arrangement is such as to hook adjacent barbs together, interlinking the whole structure. Thus the feather is strong yet flexible and light, making it ideal for flight. Magnification: x844 at 5x7cm size. Magnification: x2, 050 at 7x5 inch size
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Science Photo Library features Science and Medical images including photos and illustrations
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
Media ID 9308823
Animal Body Barb Barbule Barbules Feather Feathers Hook Swallow Type
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