The story and science of how animals find their way home.Home is the place we long for most, when we feel we have travelled too far, for too long. Since boyhood, acclaimed scientist and author Bernd Heinrich has returned every year to a beloved patch of woods in his native western Maine. But while it's the pull of nostalgia that informs our desire to go back, what is it that drives the homing instinct in animals?Heinrich explores the fascinating science behind the mysteries of animal migration: ...