But birds have four color cones, meaning they are tetrachromatic. With our three color cones, we can see the colors of the rainbow—red, orange, yellow, green, blue, indigo, and violet—the so ...

Scientists discovered two Mediterranean beetle species that can see red color, unlike almost all other insects.

Our results support the idea that birds can distinguish colors throughout tetrachromatic color space and indicate that nonspectral color perception is vital for signaling and foraging. Since ...

“But if you ask anyone ‘What color is that ... An estimated 12% of women are tetrachromatic — with far fewer discovering that. Antico’s field of work gives her a unique opportunity ...

Antico, a painter, is tetrachromatic, meaning she can perceive more than 100 million colors due to the presence in her eyes of four types of cones, or photoreceptors. Most people have three ...