Light pollution makes birds work overtime.
A behavioral analysis of nearly 600 bird species suggests that light pollution from human development can lengthen the time birds spend singing by nearly an hour per day, researchers report August 21 in Science.
The extension’s magnitude took the researchers by surprise. “While we expected some behavioral adjustment to the lights at night, we didn’t anticipate that it would be this impactful,” says Neil Gilbert, an ecologist at Oklahoma State University in Stillwater.
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