Exterior decorative lighting of tall buildings (over 200 feet) and lights shining through windows disorient birds and cause them to circle the lights or collide with the buildings under rainy or foggy conditions and under a low cloud ceiling. Reducing building lighting during migration seasons can drastically reduce the hazard of building collisions.Smart Light Safe Flight is a partnership that encourages building owners and tenants to turn off lights, and take other simple steps during the peak migration seasons of mid-March through the end of May and late August through mid-November to reduce the danger to migrants passing through. It consists of the Cleveland Museum of Natural History, Cleveland 2030 District, Cleveland Metroparks, Downtown Cleveland Alliance, Ohio Bird Conservation Initiative, and Sustainable Cleveland 2019.