ScienceDaily Posted October 22, 2014 Share Posted October 22, 2014 Scientists have revealed that feather shafts are made of a multi-layered fibrous composite material, much like carbon fiber, which allows the feather to bend and twist to cope with the stresses of flight. Since their appearance over 150 million years ago, feather shafts (rachises) have evolved to be some of the lightest, strongest and most fatigue resistant natural structures. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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