The pecten or pecten oculi is a comb-like structure of blood vessels belonging to the choroid in the eye of a bird. It is a non-sensory, pigmented structure that projects into the vitreous humor from the point where the optic nerve enters the eyeball.

Do human eyes have Pecten?

The mysterious pecten

Birds are the only animals with this unique part, called the pecten. What's it for? No one knows for sure. One other difference between bird eyes and human eyes is that the retina in mammals gets a supply of blood through tiny blood vessels.

Which bird has pectin in its eyes?

Pecten is found in the eyes of all birds except kiwi's eyes. Peacock is the national bird of India. The scientific name of the pigeon is Columba livia.