ScienceDaily Posted August 21, 2015 Share Posted August 21, 2015 Birds 'shout' to be heard over the noise produced by human-made activity, new research has shown. Researchers recorded songs produced by 32 male bluebirds, and analysed two from each male -- those produced during the quietest and loudest period of ambient noise -- to investigate whether males changes their songs between these two conditions Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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