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White cheeks are more titillating


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#1 ScienceDaily

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Posted 06 February 2018 - 09:58 AM

Male blue tits with white cheeks are healthier and more likely to mate with higher quality partners than their counterparts with duller cheek feathers. Having purer white cheeks also indicates that a blue tit was better able to overcome an infection with parasites during the previous year.

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