Video by @bertiegregory. A wild peacock in Yala National Park, Sri Lanka. These amazing colours are surprisingly not caused primarily by pigments, instead by tiny crystal-like structures in the feathers. These structures, spaced at different distances apart, cause different wavelengths of light to be absorbed and reflected, creating the amazing iridescent patterns our eyes see. Shot for @natgeo, @natgeowild and @stevewinterphoto. Follow @bertiegregory to see this male in action trying to impress a potential mate!