ScienceDaily Posted April 2, 2012 Share Posted April 2, 2012 Sparrows have changed their tune to soar above the increasing cacophony of car horns and engine rumbles. The study compares birdsongs from as far back as 1969 to today. The researchers also detail how San Francisco's streets have grown noisier based on studies from 1974 and 2008. View the full article Link to comment Share on other sites More sharing options...
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