Urban Wildlife and Light Pollution Welfare

Artificial light at night disrupts natural behavior for many urban and peri-urban wildlife species, affecting breeding, migration, foraging, and predator-prey dynamics.

Key Facts

Artificial light at night affects over 80% of the world population and much of wildlife habitat
Nocturnal insects including moths are attracted to artificial lights and die of exhaustion or predation
Sea turtle hatchlings navigate toward the brightest horizon — artificial light pulls them away from the sea
Migratory birds collide with illuminated buildings during night migration in large numbers
Amphibians rely on darkness for mating calls — light pollution disrupts their reproductive behavior

Welfare Considerations

Light pollution affects wildlife through multiple pathways that cause real welfare harm. Insects drawn to lights die in large numbers from predation and exhaustion. Sea turtle hatchlings that navigate inland from artificial light die without intervention. Migratory birds collide with lit buildings. Breeding disruption from light pollution affects amphibians and other species whose reproductive timing depends on darkness cues. Targeted light management — including motion sensors, downward-directed fixtures, and lights-out programs during migration — significantly reduces these harms.

What You Can Do

Use motion-activated, downward-directed outdoor lighting to minimize light pollution
Support lights-out programs in your city during bird migration seasons
Advocate for sea turtle-friendly beach lighting regulations in coastal areas
Reduce unnecessary outdoor lighting and use the lowest effective brightness
Support dark sky preservation advocacy in your region