Persist and shout: Male bluebirds alter songs to be heard over increased acoustic noise

21 agosto 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
http://www.sciencedaily.com/releases/2015/08/150821082723.htm

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