PhysOrg Posted January 22, 2014 Share Posted January 22, 2014 For a non-nocturnal bird, the yellow-breasted chat spends a significant amount of time visiting other birds' territories during the night. A University of Illinois researcher who was studying birds' movement during the day noticed that males were active almost every night, while the females were active at night but particularly during the window of time when they were fertile. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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