The whooping crane is the tallest bird in North America with dazzling white feathers, a red cap and a loud whooping call. The birds migrate from the Canadian north to the southern United States. Because whooping crane populations were dropping alarmingly, the government listed them as endangered and began a captive breeding program. In partnership with non-profit organizations, they trained cranes to follow behind aircraft to teach them how to migrate. If you live in the Midwest, keep your eye out for a flock of airplanes and endangered cranes.