The animal known for its ability to fly south for the winter is the migratory bird, specifically species like the snowbird or the Canada goose. These birds typically migrate thousands of miles from their breeding grounds in the northern regions to warmer areas in the south during the colder months. This seasonal migration is primarily driven by the search for food and more favorable living conditions, as colder climates often result in reduced food availability and harsh weather. The journey is a remarkable feat of endurance and navigation, showcasing the adaptive strategies of these avian species.