How Do Birds Migrate Over Long Distances?

Birds are like tiny explorers who travel far and wide every year. They use a special kind of map in their heads to find the way, sometimes it’s the sun, sometimes the stars, or even the Earth’s magnetic field! Like how you might follow a trail to get home from school, birds remember the paths they take and use them to return to their favorite places each year. It's like having an invisible compass inside of them!