NEW YORK— A new study finds that the death toll for birds that crash into buildings may be underestimated by hundreds of millions and could exceed 1 billion deaths a year. The peer-reviewed study, ...

More than 1 billion birds in the US may die from colliding with buildings each year – a significant increase from many past estimates. Despite popular belief, skyscrapers aren’t the main culprit.

(CNN) – A new study estimates over one billion birds die from building collisions in the United States each year ... Researchers said the death toll is probably much higher amongst birds ...

After observing thousands of records over decades, researchers found that birds of a feather may actually stick together ...