Geese fly in a V formation to increase flying range. By flapping its wings, each goose creates uplift for the goose behind it, allowing the flock to travel 71% further than if each flew alone. Any goose that falls out of formation feels increased drag from flying solo, encouraging it to quickly rejoin the V. Geese also take turns leading and rotating to the rear of the formation when tired, demonstrating the benefits of teamwork and shared leadership. Sick or injured geese are accompanied by two others who help and protect them until they can fly again or die, showing geese sacrifice their own needs to help their fellow flock members.