1. Canada geese fly in a V formation for long distance migration from Canada to the southern United States and Mexico, covering thousands of miles over 18 hours straight. 2. By flying in a V formation, the geese are able to fly more efficiently by taking advantage of updrafts from the bird in front, increasing their flight efficiency by 71% compared to flying alone. 3. When a goose falls out of formation from injury or fatigue, one or two geese leave the formation to stay with it, protecting it until it can fly again or dies, demonstrating loyalty among the flock.