Female zebra finches prefer red-beaked male finches over their orange-beaked counterparts.

Scientists engineered biomaterials similar to those chameleons use to change color and applied them to a robot.

In an unusual evolutionary twist, local stick spiders have come up with an almost identical repertoire of color morphs in multiple locations.

Artificial photoreceptors made of nanowires help restore blind animals’ sensitivity to light.

Scientists explore why male peacock spiders are so colorful. 

Newton’s rainbow forms the familiar ROYGBIV because he thought the range of visible colors should be analogous to the seven-note musical scale.

When imprinted on toy blocks, the young birds gravitate toward new toys that are the same shape or color as the originals, according to a study.

Researchers confirm that some microscopic imprints in fossilized dinosaur feathers are pockets of melanin.

By taking cues from bird feathers, scientists engineer nanoparticle structures that produce striking colors.