The Extinction of the Passenger Pigeon: A Roundtable Discussion. On September 1, 1914 the last passenger pigeon in the world, "Martha", died alone in the Cincinnati Zoo. A century later the U.S. Fish and Wildlife Service convened a roundtable of experts to look at how this most populous bird species ever was extinguished in about a century and what lessons could be learned from this extinction event. The roundtable was convened at the National Conservation Training Center on October 28, 1914 and

From Billions to None. The Passenger Pigeon's Flight to Extinction

What Caused the Passenger Pigeon's Collapse, and What Have We Learned? [video]

The Story of Extinct Passenger Pigeons and Their Possible "De-Extinction"