Scientists have discovered a surprisingly "visionary" detail about a dinosaur-age bird that had a tooth-filled beak: It could likely see in color. An analysis of the 120-million-year-old bird revealed ...

This is a preview. Log in through your library . Journal Information The Auk: Ornithological Advances aims to advance fundamental scientific knowledge by increasing the basic knowledge of bird species ...

After taking a neuroscience or biology course, most students have heard about rods and cones. But what about the recently discovered third class of photoreceptor cells in the retina - intrinsically ...

Under twenty-first-century metropolitan conditions, almost all of our vision is mediated by cones and the photopic system, yet cones make up barely 5% of our retinal photoreceptors. This paper looks ...