We’ve all laughed at the classic cartoon gag where a bird flies headfirst into a window. Turns out this phenomenon isn’t just a joke, it’s deadly among migratory birds in Philadelphia, killing an ...

The advice to place reflective windows and mirrors outdoors will lead to the further decimation of bird populations (“A Place to Reflect,” Off Duty, June 10). This is common knowledge to those who ...

In the United States alone, hundreds of millions of birds die every year from inadvertently flying into windows. At the University of Delaware’s Cannon Laboratory, located on the Hugh R. Sharp Campus ...

Some bird species attack windows because they mistake their reflection for a rival. Take preventative measures in the spring, when the behavior is at its peak.