Birds normally active at twilight might be helped by light pollution - by AndyTomaswick
Credit – National Geographic YouTube Channel
They fitted activity trackers to birds in three separate locations: Belgium, sub-tropical Africa, and Mongolia. In Belgium, there is a relatively high occurrence of skyglow, whereas, in Africa and Mongolia, there was hardly any, with “pristine skies,” as the paper describes them. They found that, on moonless nights , nightjars are four times more active in Belgium than in Africa and twice as active as in Mongolia.
In those built-up areas, the researchers found that nightjars dramatically increased their activity on overcast nights, while in the areas less affected by skyglow, their activity level decreased. Simply put, skyglow allowed the birds to operate more effectively under low natural light conditions than they might have otherwise.
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