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Old Theories, Real Evidence
- Aristotle proposed migration, transmutation, and hibernation to explain disappearing birds.
- The discovery of African-speared storks in Europe helped confirm long-distance migration.
Tracking Reveals Global Journeys
- Tracking technology transformed migration from mystery to measurable phenomenon.
- Scientists now tag birds, mammals, fish, and more to map vast seasonal journeys.
Unimaginable Round Trips
- Some species make incredible intercontinental round trips to follow seasonal daylight or resources.
- These migrations can span poles or cross oceans despite no individual having prior experience of the route.