Science News Headlines | Latest Science News Articles – Yahoo! India News: Urban birds sing louder to compete with city noise

Science News Headlines | Latest Science News Articles – Yahoo! India News Latest Science news headlines from Yahoo! India News. Find science news articles, videos, pictures and in-depth Science coverage from India and around the world.

Urban birds sing louder to compete with city noise Dec 13th 2011, 11:03 London, Dec 13 (ANI): Birds living in cities sing at a higher pitch to reduce the impact of echoes from surrounding buildings, a new study has claimed.

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