Teachers! This book is like a whole unit on migration wrapped in a winning combination of easy verse, factual language, and beautiful illustrations. For animals, migration is a powerful compulsion to travel, sometimes over long distances, often skipping many meals. Sometimes, as in the case of the monarch butterfly, a round-trip takes several generations. Why do they do it? How do they succeed? The ten featured species offer a broad representation of migration: loggerhead turtles, monarch butterflies, manatees, ruby-throated hummingbirds, Pacific salmon, Canada geese, California gray whales, caribou, Arctic tern, and emperor penguin. The book is loaded with additional tips for teachers. Once again Marianne Berkes combines her teaching, writing, and theatrical skills to combine entertainment with education - creative non-fiction at its best.