Birds may be able to distinguish different 'voices' in each other's calls, giving rise to cooperative behaviour between non-related individuals, a researcher has suggested.
Source: http://www.cosmosmagazine.com/news/5193/birds-use-different-voices-team
Desiree Dymond Diane Kruger Dido Diora Baird Dita Von Teese Dominique Swain Donna Feldman Drea de Matteo Drew Barrymore Ehrinn Cummings
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