Birds versus windows

Skyscraper windows kill fewer birds every year than the windows on low-rise buildings

By Stephen Ornes, 12:21 PM February 24, 2014

Huge numbers of birds die every year in the United States after flying directly into the windows of buildings. That number falls somewhere between 365 million and 988 million, a new estimate finds. Between two and 10 out of every 100 U.S. birds may die this way.


The birds may not see the windows. Or they may mistake a reflection for the real sky. Either way, an average of 24 birds die every year at any given skyscraper, the new study found. By comparison, a single small building may kill, on ...

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