An environmental tragedy struck the city of Chicago when, on October 5, this year's nearly thousand migratory birds died when they crashed into the McCormick Place Lakeside Center. The light refracted by the windows and the plexiglass of the building would have attracted the birds which, not distinguishing the difference with natural light, crashed into the building.
Geoff Henebry, a geography professor at Michigan State University, explained: "Cities pose multiple risks to migratory birds. They also provide resources for tired birds to rest and refuel. Our study is noteworthy because it combines big data , and a lot of processing, from the weather surveillance radar network with big data from multiple space sensors to address key questions regarding the influence of urban areas on bird migration."
According to the study Bird–building collisions in the United States: Estimates of annual mortality and species vulnerability by the Smithsonian Conservation Biology Institute and the U.S.
Fish and Wildlife Services In the United States alone, at least a billion birds die every year from crashes into buildings.
Environmental tragedy in Chicago
According to experts, the main problem is represented by cities, which due to artificial lights attract huge numbers of birds during migratory periods.
Scientists determined that light pollution was the main factor for the roost of these animals. Artificial lights attract them to urban environments even thousands of kilometers away.
This is according to a study published in Nature Communications by scientists from the Department of Fisheries, Wildlife and Conservation Biology at Colorado State University.
"Nearly 1,000 birds died after striking the windows at McCormick Place convention center on October 5: the most Field collecting efforts have documented in the past 40 years," wrote on X the account of the Field Museum. You can read their post below:
Nearly 1,000 birds died after striking the windows at McCormick Place convention center on October 5: the most Field collecting efforts have documented in the past 40 years.
?: Lauren Nassef pic.twitter.com/d0AvYmwSQW — Field Museum (@FieldMuseum) October 6, 2023