Martin and Chris are hanging out in China with their Giant panda friend Stuffo, when they receive reports of Snowy owls showing up all over North America. Since these raptors live in the Arctic, it's up to the Wild Kratts to solve the Mystery of the Snowy Owl Invasion! Science Concept : Territoriality, population cycles, migration.

Migrating birds care more about the ease of their trip than the distance they travel, and that leads to some truly roundabout routes.

Birds can travels thousands of miles between their summer and winter homes. Why don’t they get lost? Their secret is a sixth sense: magnetoreception.

The arctic tern makes the longest migration of all living animals! In fact, these birds fly tens of thousands of miles each year! Learn more arctic tern facts on this episode of Animal Fact Files!

Learn how milk gets from farm to table in this video! From farm to fridge, your milk is cared for and so are the cows that produce it.