The Dead Bird Rabbit Hole

Every December, tens of thousands of volunteers look to the skies for an international census of wild birds. 

But during migration season, a much smaller squad of New York City volunteers take on a more sobering experience: counting dead birds that have collided with glass buildings and fallen back to Earth. 

In this episode, we find out what kind of people volunteer for this grisly job, visit the New York City rehab center that takes in injured pigeons, and find out how to stop glass from killing an estimated one billion birds nationwide every year. 

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