U.S. Fish & Wildlife Service – Bird migration is a complex behavior that serves various ecological, evolutionary, and survival purposes. The Migratory Bird Program works with partners to protect, restore and conserve bird populations and their habitats for the benefit of future generations.
Bird migration is a natural phenomenon that has captured the imagination of people across cultures for centuries, involving the mass movement of birds across vast distances, often spanning continents, and are driven by a combination of instinct, environmental cues, and survival strategies.