Every year, up to a billion birds are killed in the U.S. when they strike windows.
In New York City alone, an estimated 90,000 birds die after crashing into high-rise windows, especially during migration seasons.
Efforts are under way now in New York to design windows that could save the lives of avian travelers.
This video was first published by National Geographic on 22 Dec 2014.
Great to see that attention is being given to this problem. Even in a single-story house with cathedral-ceiling windows, I still had birds flying into those upper windows until i put stickers on those windows or figurines of non-birds on the inner sills. The stickers seemed to help most with window-crashing prevention.