Earth Navigators (PBS Nature)

Earth Navigators is a PBS nature documentary following the world's most dauntless creatures in their epic migrations. Seasonal changes impel a wide variety of creatures, from whooper swans to monarch butterflies, to begin their epic migrations to ancient feeding, mating, and breeding grounds, sometimes covering thousands of miles and employing ingenious methods to reach their destinations. The migration of animals is one of the most astonishing phenomenons in the natural world. Twice a year, over land, in the air, and through the oceans, animals move in their thousands, prompted by the changing seasons.

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Nature's Great Events