CBCM logo animated
CBCM Banner Title


Lights Out Chicago!

Please join light reduction efforts to make Chicago a safer place for migrating birds!

Skyline graphic

Lights from the tops of multi-story buildings (including logos, clocks, lighted antennae, and decorative top decorations) are fatal attractions to migratory birds that are passing over urban areas at night. Birds are drawn away from their night time flights to become hopelessly disoriented and trapped circling brightly lit structures or beams of light. When they arrive in the downtown area just before sunrise, birds are tempted to fly into brightly lit lobbies towards attractive indoor plants and fountains.

We encourage building management and the public to support light reduction in downtown and lakefront areas by turning off all bright display lighting on the top of your building in the downtown area or along the lakefront from 11:00 p.m. until sunrise during spring migration (March 15 to June 15) and fall migration (August 15 to November 15).

Reduce as much of the light from your building as possible:

This will make a big difference in bird safety and provide energy savings too!

Help Chicago continue as the city with the greatest participation in light reduction for bird safety in North America!

Write your city representatives to request that light reduction become a city ordinance that requires making the skyline safer for migrating birds!

Learn more about the benefits of light reduction at the Illinois Coalition for Responsible Outdoor Lighting.





Chicago Bird Collision Monitors (CBCM) is an all volunteer bird conservation project that operates under the auspices of
the Chicago Audubon Society.


Home | Contact Us | FAQ

© 2012 Chicago Bird Collision Monitors