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

Research shows birds 'shout' to be heard over noise produced by human-made activity

Date: August 21, 2015

Source: University of Exeter

Summary: 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

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