Science says birds can navigate using Earth’s magnetic field, here’s how their invisible compass may work

What scientists increasingly understand is that bird navigation is far more complex than simply following familiar landmarks.
Nature

Sea turtles use magnetic ‘map’ and ‘compass’ to navigate the ocean

Loggerhead sea turtles (Caretta caretta) can learn to associate food with the geomagnetic signatures of various oceanic regions, suggesting that they are able to find known foraging areas using an ...