Flamingo

Moscow Zoo
According to scientists, pink flamingos are one of the most ancient birds on our planet. Why pink? Because the color is due to carotene, which is abundant in crustaceans and algae that flamingos eat. And why is standing on one leg? To minimize wind loss of heat; the legs are long and without feathers, the heat quickly goes away through them, so the bird alternately hides one leg under the feathers .. Nature has taken care that this pose is very stable.