Wildlife Welfare

Light Pollution and Wildlife Welfare

Artificial light at night disrupts wildlife chronobiology, migration, reproduction, and predator-prey relationships, causing chronic welfare harm across many species.

Key Facts

Artificial light at night has increased by 2% per year globally in recent decades
Sea turtle hatchlings are disoriented by beach lighting causing them to move away from the sea
Migratory birds collide with illuminated buildings in their millions annually
Light pollution disrupts insect night activity affecting pollination and food chains
Some bats avoid foraging near street lights due to predation risk from light-adapted predators

Welfare Considerations

Light pollution causes chronic welfare disruption across wildlife communities by interfering with biological clocks, navigation systems, and behavioral patterns evolved over millions of years. Unlike many environmental harms, light pollution can be rapidly reduced through technology choices: warm-toned LEDs, timers, shielding, and reduced intensity all reduce wildlife impact while maintaining human lighting needs. This tractable problem deserves more welfare attention.

What You Can Do

Use warm-toned, shielded, and motion-activated outdoor lighting where possible
Turn off unnecessary indoor lights at night during bird migration seasons
Advocate for wildlife-friendly street lighting policies in your community
Support Dark Sky designations and organizations reducing light pollution