feather evolution - BBC

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feather evolution - BBC

Postby Mr Goose » Thu Oct 23, 2008 11:53 am

..with some pretty pictures of pre-parrots
http://news.bbc.co.uk/1/hi/sci/tech/7684796.stm
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Postby Chris Sergeant » Fri Oct 24, 2008 11:46 am

I found the article particularly interesting in noting that:
“It had a fluffy, down-like covering and sprouted two pairs of enormously long, ribbon-like shafted tail feathers. These were almost certainly used for display - making it the oldest known species to possess these.
But its limbs lacked contour feathers - a feature common to most modern birds.
Suggests that display feathers appeared before aerofoil feathers and flight ability.”

So it appears like yet another example of Evolution subsequently utilising an existing feature for a different purpose.
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