2012年7月2日 星期一

BBC News - Home: Arctic birds still fit when fat

BBC News - Home
The latest stories from the Home section of the BBC News web site.
thumbnail Arctic birds still fit when fat
Jul 2nd 2012, 10:00

Chicken-like birds that live in the Arctic remain just as fit when they fatten up for the winter, experiments using tiny "bird treadmills" reveal.

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