Contact: Janet Lathrop
University of Massachusetts at Amherst
Caption: The largest analysis to date of urbanization effects on bird and plant species diversity worldwide four "cosmopolitan" bird species found in more than 80 percent of cities are the rock pigeon, house sparrow, starling and barn swallow.
Credit: NCEAS, Paige Warren
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Related news release: Global survey of urban birds and plants find more diversity than expected