Why do flamingos stand on 1 leg?

No one is really sure why flamingos stand on one leg. Scientist aren't even sure why flamingos stand on one leg. But one thing that has been proposed is that flamingos stand on one leg to relieve the pressure off the one side and res that side while the other side functions and controls the body. Then when that side has rested then they will alternate legs and do the same thing until they are fully rested and ready to go on about their business.