An analysis of the 120-million-year-old bird revealed that the creature's eye tissues — more specially, its rods and cones — had fossilized in remarkable condition. (Whereas rods sense grey ...

The density of the cones in the retina of a bird is two to three times the density in the human eye, making avian vision even crisper. Our notion of visible light does not pertain to birds.

While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A research team trained wild ...

Fossilized eye tissue in a 120-million-year-old bird has revealed that this ancient creature could likely see in color.

The human eye contains three types of cone cells, photoreceptors that allow us to see blue, green and red light. Many animals have different combinations of photoreceptors, which means that they ...

Structures and functions of bird’s eye. (a) Bird vision. (b) Deep central fovea and four types of cones. (c) Foveated vision and tetrachromatic vision. The eyes of raptors such as eagles can ...

Hyperuniformity gives birds the best of both worlds: Five cone types, arranged in near-uniform mosaics, provide phenomenal color resolution. But it’s a “hidden order that you really can’t detect with ...

Swedish researchers have recreated how birds see the world using a special camera. While human colour vision is based on three primary colours: red, green and blue, birds can also see ultraviolet.