Migration of Birds

Twice a year the sky fills with travelers. This classic government circular explains one of nature's great wonders: how birds navigate by stars and landmarks, why they fly by night or day, the flyways they follow across continents, and the perils they meet along the way. Clear, factual, and quietly astonishing, it distills decades of field research into a short, satisfying listen. When the geese pass overhead this season, you will know where they are going and how they know the way. Look up, then listen.