Light pollution harms bats and their prey
Artificial light disrupts navigation, roosting and feeding
- Artificial lights attract flying insects – bats hunting these insects are exposed to predators.
- Other bats avoid lights, so are unable to cross or feed at sites with artificial lighting.
- Bats emerge around sunset to feed – artificial light delays feeding because resting bats do not notice night fall.
- Artificial light exposes bats to predators when leaving rest sites (roosts), and causes them to abandon roosts altogether.
- Lighting near bats’ travel routes can increase their flight time and energy use by cutting them off from food and water sources.