Assessing safety through vocal cues

For the first time foraging birds have been shown to use vocal cues, rather than vision, to gain information on both the size of the group they are in and their spatial position within that group.

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<p><a href="http://www.physorg.com/news95689600.html">Assessing safety through vocal cues</a></p> <p>For the first time foraging birds have been shown to use vocal cues, rather than vision, to gain information on both the size of the group they are in and their spatial position within that group.</p>