Light Pollution Extends Birdsong by 50 Minutes a Day
2025-08-27
A new study reveals that light pollution is disrupting birds' biological clocks. Analyzing over 60 million recordings of birdsong, researchers found that in brightly lit areas like cities, birdsong is extended by an average of 50 minutes daily. Birds start singing 18 minutes earlier and stop 32 minutes later compared to those in darker areas. This extended activity could impact rest, foraging, and reproduction, potentially exacerbating global bird population declines. The study highlights the significant and often overlooked impact of light pollution on wildlife.
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biological clock