BBC E-mail: The surprising uses for birdsong

["Wilsons" <>]

Seems that the songs we like to hear so much have a number of other benefits 
to humans - although some of our natives and summer visitors might not make 
the cut (sorry Messrs Channel-billed Cuckoo and Koel).
Cheers
Tom Wilson

** The surprising uses for birdsong **
Birdsong isn't just beautiful to listen to, it is increasingly being used in 
some rather unusual ways.
< http://www.bbc.co.uk/news/magazine-22298779 >

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