Those birds that crashed and died? It wasn't fumes. — Harvard Gazette

After internet theorists react to viral video, Harvard researchers answer with science.

Those birds that crashed and died? It wasn't fumes. — Harvard Gazette

More than 1,000 birds killed in one night after hitting the same Chicago building

Full-blown crisis': North America has lost nearly 3 billion birds since 1970

Many bird species are declining in R.I. — here are 9 that researchers will keep an eye on - The Boston Globe

Opinion What Viral Chatter Tells Us About Bird Flu - The New York Times

More than 1,000 birds killed in one night after hitting the same Chicago building

Bird Crashes into Museum Building and Dies for Science

New Research Shows Over a Third of North American Birds Have Disappeared in the Past 50 Years.

Birds are crashing into NYC buildings. Record numbers are being rescued.

Almost 3 Billion Birds Disappeared Across the US, Canada Since 1970