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Study suggests bigger brains in birds translates to less stress


PhysOrg

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(Phys.org) —A team of researchers with members from the U.S. Hungary, France and Spain has found that birds that have proportionally bigger brains tend to experience less stress than those with proportionally smaller brains. In their paper published in Proceedings of the Royal Society B, the team describes how they studied data obtained from prior research efforts that captured stress hormone levels for 119 different species and found those birds with the largest brains relative to their body size, had the lowest levels of stress hormones in their blood during stressful events.

 

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