Science: When COVID-19 silenced cities, birdsong recaptured its former glory

Science: When COVID-19 silenced cities, birdsong recaptured its former glory. “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. During the pandemic lockdown this spring, the background din quieted. A new study shows that, in just a matter of weeks, the sparrows’ songs recovered the acoustic quality of songs sung decades ago, when city life was less noisy.”

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