Recently found a request on Twitter from Chicago Bird Collision Monitors about turning off lights at night to help migrating birds navigate around Chicago.
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).
The image above is from Birdcast.info. It's call the Bird Migration Forecast Map.
NBC Chicago interviewed CBCM and reports:
According to the group, 50% of the birds that use the Mississippi River Valley migratory path from the Midwest and down to the Gulf Coast are expected to make their way through or around the Chicago area over a period of just nine select nights, depending on breed and departure time.
For example, more than 437 million birds are expected to be in the skies overnight on Sept. 24, with the Midwest seeing the highest concentration of activity.
I find it poetic and exciting that overhead at night the skies are filled with hundreds of millions of birds.
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