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New evidence on how birds took to the air

Source
BBC News

Publication Date
2017-10-10

New fossil evidence has pushed back a key step in the evolution of bird flight by millions of years.Skeletal changes that helped birds take to the air happened 120 million years ago, during the hey day of dinosaurs, according to a specimen from China.

Content
http://www.bbc.com/news/science-environment-41518892