Here are 15 birds that lay blue eggs. Dunnocks are small brown and gray birds with short black streaks on their plumage. They are native to parts of Eurasia and currently inhabit European and ...

They range in sizes from chicken egg-sized to as small as a bean and come in different colors, like blue or pale gray. However, most backyard birds eggs won't look like a chicken's egg.

But some scientists have doubted that dark speckling on a light egg is an effective camouflage. Others point out that ...