Wild Animal Welfare

Wild Nesting Bird Light Pollution Advanced

Light pollution affects wild bird welfare through disrupted circadian rhythms, altered behaviour, and disorientation - targeted mitigation reduces these welfare costs.

Key Facts

Artificial light at night (ALAN) causes birds to sing earlier and disrupts natural rhythms
Nocturnal migrants are attracted to and disorientated by illuminated structures
LED lighting reduces energy use but blue-spectrum LEDs have greater wildlife impacts than warm-spectrum
Dark sky areas protect wildlife from ALAN while providing human wellbeing benefits
Window lights switched off during migration significantly reduce nocturnal migrant mortality

Welfare Considerations

Light pollution creates welfare costs for wild birds through disrupted physiology, disorientation, and altered behaviour. Simple mitigation - warm LED lighting, light timers, and switched-off windows during migration - directly reduces these welfare costs.

What You Can Do

Switch to warm-spectrum LED outdoor lighting to reduce wildlife impact
Turn off unnecessary indoor lights during migration season to reduce nocturnal disorientation
Support dark sky reserve designations in rural areas