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, humans have brought many migrants to the brink. Based on his bestselling new book, A World on the Wing, Scott Weidensaul takes you around the globe to learn how people are fighting to understand and save the world’s great bird migrations. Scott Weidensaul is the author of more than two dozen books on natural history and is a contributing editor for Audubon. He is an active field researcher, studying Saw-whet Owl migration for more than two decades and the winter movements of snowy owls through Project SNOWstorm.

Here are the recordings for the program.