ScienceDaily Posted February 6, 2018 Share Posted February 6, 2018 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. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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