Why is the "Lights Out" Program Important?
Guidelines for Bird-Safe Lighting for Businesses
- Use automatic lighting controls (timers and motion detectors).
- When possible, turn both interior and exterior lights off by 11pm, especially during spring and fall migration periods.
- Spring migration: May 1st through mid-May is when the peak migration period occurs for many bird species in Missouri.
- Fall migration: Fall migration period is more extended, with migration occurring from mid-August through October. We ask businesses to focus their light-control efforts during the month of September
- Use task lighting to create small light zones and minimize unnecessary indoor lighting.
- Utilize light dimmers in atriums and hallways to control indoor light levels.
- When possible, close interior blinds to protect migrating birds from indoor lighting that must remain on at night.
- Eliminate/reduce any direct upward exterior lighting. Ensure that all exterior light fixtures are shielded (downward light only).
- Utilize minimum wattage fixtures to achieve appropriate lighting levels.
- Avoid use of floodlighting, spotlights, or searchlights. When this cannot be avoided, turn off such lighting during spring and fall migrations.
- Blue and green exterior lighting impacts birds less than white or red lighting.