Scientists discover an ‘invisible barrier’ that holds the answer to one of nature’s little mysteries

Friday, March 16, 2012

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Scientists discover an ‘invisible barrier’ that holds the answer to one of nature’s little mysteries

Why would a smart and adaptable bird that eats almost anything and can survive happily in even the most heavily degraded habitats, have a world range so small it would fit comfortably inside a quarter of of Wales?

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