Even as scientists make astounding discoveries about the navigational and physiological feats that enable migratory birds to cross immense oceans or fly above the highest mountains, go weeks without sleep or remain in unbroken flight for months at a stretch, humans have brought many migrants to the brink. Based on his newest book A World on the Wing, author and researcher Scott Weidensaul takes you around the globe -- with researchers in the lab probing the limits of what migrating birds can do, to the shores of the Yellow Sea in China, the remote mountains of northeastern India where tribal villages saved the greatest gathering of falcons on the planet, and the Mediterranean, where activists and police battle bird poachers -- to learn how people are fighting to understand and save the world's great bird migrations.

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Scott Weidensaul is the author of more than two dozen books on natural history, including the Pulitzer Prize finalist Living on the Wind and his latest, the New York Times bestseller A World on the Wing. Weidensaul is a contributing editor for Audubon, a columnist for Bird Watcher's Digest and writes for a variety of other publications, including Living Bird. He is a Fellow of the American Ornithological Society and an active field researcher, studying saw-whet owl migration for more than two decades, as well as winter hummingbirds, bird migration in Alaska, and the winter movements of snowy owls through Project SNOWstorm, which he co-founded.

Hosted by Wilmington Memorial Library in partnership with Billerica Public Library, Chelmsford Public Library, Flint Memorial Library, Memorial Hall Library and Tewksbury Public Library.