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Sparrows `sing out loud` to be heard in noisy cities

Last Updated: Tuesday, April 03, 2012, 14:36

Sparrows change their tune to keep pace with city life and soar above the increasing cacophony of car horns and engine rumbles, a new study has revealed.

Adult male songbirds don’t feel threatened by young rivals

Last Updated: Wednesday, February 08, 2012, 12:55

Older male sparrows don’t put much of a fight when they hear a young male singing in their territory.