In an exhilarating blend of adventure and scientific inquiry, 'On the Wing' chronicles Alan Tennant's groundbreaking journey to follow the transcontinental migration of the peregrine falcon. Joined by George Vose, a septuagenarian WWII veteran with a knack for flying by instinct, Tennant embarks on a perilous quest using radio-tracking technology, tracing the birds' route from the barren Texas coastline to the freezing Arctic, then southward through Mexico into the Caribbean. Their odyssey is fraught with challenges, including near-death experiences, brushes with the law, and the relentless pursuit of fuel for their worn Cessna. Tennant's vivid storytelling invites us to soar alongside these raptors, revealing their solitary nature and the awe-inspiring aspects of their incredible journey—a testament to the indomitable spirit that fuels both humankind's and nature's voyages of discovery.