Bird eyes differ dramatically from human eyes. ... Owls, specifically, have large retinas that give them not color, but maximum black-and-white vision in very low light.

White-crested Helmetshrikes have a predominantly black body with a conspicuous white crest on the head. Their eyes are surrounded by bright yellow eye-rings, and they have a slender, slightly ...

The blue eyes of some seabirds appear to turn black after they have had a bird flu infection. The colour change, seen in northern gannets ( Morus bassanus ), may give scientists a new way to track ...

The Oriental White-eye, as its name suggests, has a striking white eye-ring. The bird has yellowish green plumage on its upper parts, the chin and throat are yellow while the lower feathers are a ...