Polka-dotted window film was applied to windows at McCormick Place last summer ahead of the fall migration. The drop in collisions is a victory for the birds, bird advocates and the building and a model that other glass-walled Chicago buildings could emulate.

Crash fatalities down more than 90% this fall with 18 deaths compared to 1,280 deaths in the fall of 2023, Field Museum expert says.

Birds have nearly stopped colliding into the McCormick Place Lakeside Center. Since bird-safe film was installed on the building’s windows last summer, collisions into the mostly glass structure are down over 95% during the recent fall migration compared with previous seasons, the Field Museum said.

Since bird-safe film was added to the massive windows at McCormick Place’s Lakeside Center in summer 2024, bird collisions have dropped by over 95%.