Prof. Sam LawlerR. Evens: They put [cute little!] light sensor/locator backpacks on nightjars. Walking us through reading an actigram - can clearly see the influence of moon brightness (phase and sky altitude, clouds too) on their activity.
Birds have more activity during no moonlight period in light polluted place (Belgium) than in dark sites - clouds are bright rather than dark due to light pollution
More skyglow=more eating (behavioural change)
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