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Why do birds sing?


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#1 BirdLife International

BirdLife International

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Posted 03 March 2017 - 03:35 AM

Trills and chirps, songs of love and warning shrieks, whistles through the wind in mid-flight – but why do birds sing? We decode the secret language of birds.

Read more: http://feedproxy.goo...y-do-birds-sing




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