How male owls pitch their wits to show who’s who

A male owl's hoot may not be all it seems to rivals when it comes to defending valuable territory, new research has revealed.

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<p><a href="http://www.physorg.com/news95691335.html">How male owls pitch their wits to show who’s who</a></p> <p>A male owl's hoot may not be all it seems to rivals when it comes to defending valuable territory, new research has revealed.</p>