'Nervous' birds take more risks

Scientists have shown that birds with higher stress levels adopt bolder behaviour than their normally more relaxed peers in stressful situations. A University of Exeter research team studied zebra finches, which had been selectively bred to produce three distinct types – ‘laid-back’, ‘normal’ and ‘stressed’ – based on their levels of stress hormone.

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<p><a href="http://www.physorg.com/news112601269.html">'Nervous' birds take more risks</a></p> <p>Scientists have shown that birds with higher stress levels adopt bolder behaviour than their normally more relaxed peers in stressful situations. A University of Exeter research team studied zebra finches, which had been selectively bred to produce three distinct types – ‘laid-back’, ‘normal’ and ‘stressed’ – based on their levels of stress hormone.</p>