[Lee Stewart]

The migrating monarch butterfly has an impressive ability to navigate long distances. Every year, millions of monarchs travel thousands of miles from Canada to Mexico and back, a feat that seems impossible for such a delicate creature.

They navigate their destination using a combination of the position of the sun, their internal body clock, memory, and sense of smell. They can remember the location of feeding and breeding sites from several generations ago. Also, they can detect the scent of their host plant from several miles away.