Scientists believe they have found flamingos stand on one leg. We all the image of these birds standing in on just one leg. The why the birds do this has puzzled scientists for . Researchers in Atlanta, USA, say they have uncovered this of the natural world. Professor Young-Hui Chang says a flamingo can stand on just one leg for hours because of its . The flamingo's hips and leg bones are in a special shape and position that give the bird amazing balance. Professor Chang said the flamingo's basic anatomy (bone structure) means it can stand on one leg with . Flamingos do not have to use their muscles a lot to do this.
Another , Lena Ting, said the flamingo is very because it can stand still for a long time on one leg. He said it would be very for a human to stay still without moving, even for an hour. He said: "Most of us aren't aware that we're moving around all the ." He added that even when we stand , we actually move and use a lot of . The muscles in our body change to keep us straight and stop us from falling over. The position of the bones in a flamingo means the birds do not need to use so many to keep still. This means they save energy. The researchers say that saving energy could be the reason birds stand and sleep on one leg.