Some primitive birds boasted four wings, before evolution led them to ditch their hind feathers in favour of webbed or scaly feet, Chinese scientists said.
The post Early birds had four wings, not two appeared first on COSMOS magazine.
Source: http://www.cosmosmagazine.com/news/early-birds-had-four-wings-not-two/
Chelsea Handler Cheryl Burke China Chow Chloë Sevigny Christina Aguilera Christina Applegate Christina DaRe Christina Milian
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