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When COVID-19 silenced cities, birdsong recaptured its former glory
Erik StokstadScience’s COVID-19 reporting is supported by the Pulitzer Center and the Heising-Simons Foundation.White-crowned sparrows are tough birds, able to survive the hustle and bustle of many North American cities. But growing noise pollution has forced males to sing louder, less effective songs in order to be heard by rivals and mates.