Birds distinguish more colors than people

British scientists say bird eyes distinguish more colors than human eyes. It is the ultraviolet light that the invisible person plays a key role in the life of birds.

The eyes of birds have up to 4 receptors while humans have only 3.

InoPressa newspaper, quoted from Corriere della Sera, reported that a group of scientists at Birmingham University (UK) studied light waves reflected from bird eggs and discovered: Eggshell containing protroporfirin pigment and biliverdin, making the eggshell (even one color or speckled) have its own color. Proporfirin makes eggshell light brown, and biliverdin makes eggs slightly bluish or green.

Philipp Cassy, ​​the project coordinator said that for the birds the most important colors are formed by ultraviolet light. The human eye does not recognize this type of light, but it helps the bird to protect the eggs from being eaten by birds by camouflaging or distinguishing their eggs from the same type of eggs.

It is known that there are only 3 receptors in human eyes and mammalian eyes, while birds have 4 receptors. A receptor is dedicated to ultraviolet rays.