Great tit nestling. Credit: David López-Idiáquez (IMAGE)

University of Oxford

Great tit nestling. Credit: David López-Idiáquez

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Great tit nestling. Credit: David López-Idiáquez

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David López-Idiáquez

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This image is for editorial purposes relating to this press release only and MUST be credited to David López-Idiáquez. It MUST NOT be sold on to third parties.

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