Birds often struggle to distinguish between the outdoors and reflective glass surfaces, leading to collisions with buildings when they mistake reflections of the sky and surrounding vegetation for the natural environment.
Moreover, urban lighting attracts migratory birds at night, increasing the risk of these dangerous encounters.
According to a 2024 study, over 1 billion birds are estimated to perish each year in the United States due to collisions with buildings.
This alarming number exceeds previous estimates, as it includes not only those found deceased at the crash site but also birds that succumbed to injuries while receiving care post-collision.
Researchers are advocating for the construction of bird-friendly buildings, suggesting the addition of visual markers on windows to help reduce these incidents.
This article addresses the question: “How many birds fly into buildings?” (asked by Barry Megan via email).
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Source: www.sciencefocus.com
