The document summarizes the migration patterns of several different animal species. It describes where they migrate between (such as between Tanzania and Kenya for wildebeests), why they migrate (for food, breeding, escaping weather), how far they travel (up to 2.4 million km for Arctic terns), and other key details about their migratory behaviors and habitats. Animal species discussed include wildebeests, locusts, blue whales, monarch butterflies, salmon, Arctic terns, Adelie penguins, Siberian cranes.