A story of three animal families on a journey across our planet - polar bears, elephants, and humpback whales. It captures rare footage of nature's wildest and most elusive animals.

An introduction to the migration patterns of nine very different types of animals, from gray whales and sandhill cranes to polar bears and monarch butterflies, discusses their life cycles and how to spot them.

Describes how the bar-tailed godwit prepares for and carries out what is the longest nonstop bird migration--a seven thousand-mile flight from Alaska to New Zealand.

"Simple text and full-color photography introduce beginning readers to arctic tern migrations. Developed by literacy experts for students in kindergarten through third grade"--

Describes the migratory habits of caribou, monarch butterflies, gray whales, and snow geese, explaining how and why they make their long journeys.

"An exhilarating exploration of the science and wonder of global bird migration. In the past two decades, our understanding of bird migration-the navigational and physiological feats that enable birds to cross immense oceans or fly above the highest mountains, to go weeks without sleep, or remain in unbroken flight for months at a stretch-has exploded. Scientists have made astounding discoveries: certain species, such as thrushes, can avoid dehydration...