How do geese know how to fly south for the winter?

The migrating geese are refueled and ready to fly south 🦢✈️ #MigrationJourney #WildGeese #BirdMigration | Wild Realm

Geese Flying South for Their Migration Journey

A flock of geese flying in a V-formation across an autumn sky.

Follow leaders: Flock of geese flying in an imperfect V formation. Slow motion. Birds Geese flying in formation, Blue sky background. Migrating Greater birds flying in Formation

Follow leaders: Flock of geese flying in an imperfect V formation. Slow motion. Birds Geese flying in formation, Blue sky background. Migrating Greater birds flying in Formation