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Thursday, March 14, 2013

Traffic noise driving songbirds to the limit in cities


11 March 2013 

Traffic noise driving songbirds to the limit in cities

By Mark Kinver
Environment reporter, BBC News



Traffic, India (Image: AP)
More than half of the world's population lives
in urban areas, which is having an impact on wildlife


The rising level of noise in urban areas may be preventing some species of songbirds from setting up home in developed areas, a study has concluded.

Canadian researchers found that noisy surroundings masked the lower frequencies of bird songs, affecting the way some species communicated.

Unable to hear all elements of a song, females could perceive singing males as ill-suited mates, they added.

The findings have been published in the Global Change Biology journal. (...)

Full text: http://www.bbc.co.uk/news/science-environment-21716030

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