2. Blue Jay: These vibrant birds lay pale blue eggs with brown spots. 3. Eastern Bluebird: As their name suggests, Eastern ...

Why do birds lay blue eggs? Well, the blue color has biliverdin ... and they always have brown spots. Blue jays lay their eggs in nests 10 to 25 feet high in trees. Starlings lay blue, white ...

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