Ducks Carry a Built-In Compass in Their Beak
Certain migratory ducks possess clusters of iron-rich cells located in their upper beak that function as tiny biological magnets. These structures allow them to sense the subtle shifts in Earth’s magnetic field lines and orient themselves during long flights across continents.
💡 Fun detail:
Scientists discovered that when researchers placed a tiny magnet over this area, the ducks became temporarily disoriented, proving the beak truly acts like a living GPS unit.
Source: Nature Communications