Ducks Carry Their Own Built-In Navigation Map
Scientists have discovered that many duck species possess an internal magnetic compass that helps them travel vast distances during seasonal migrations. This biological GPS uses tiny iron-rich cells in the beak and brain to sense Earth’s magnetic field lines, allowing ducks to navigate accurately even on cloudy nights.
💡 Fun detail:
Researchers found that disrupting this magnetic sense with a small magnet glued to a duck’s head makes the bird suddenly fly in confused circles.
Source: National Geographic