What is home and why do we and most animals need it? Why do birds migrate annually from warmer regions to colder ones and back again? Why do fish spawn at the place of their birth, risking their lives to return there? How do birds, insects, and mammals navigate their regular routes? And why does even one of the most restless of all species, humans, have such a deep need for a home, a place to belong? What biological significance underlies this unique attraction to a specific place? In search of answers to these and many other questions, biologist Bernd Heinrich follows the Canadian cranes to Alaska and the eels on their mysterious long journey to the Sargasso Sea. He describes various types of constructions in the animal kingdom and explores the history of his own home in Maine, where he has lived for many years.