Now, researchers reporting a study of familiar pet store parakeets -- also known as budgies -- have new evidence to explain how the birds produce their characteristic yellow, blue, and green feathers.

Well, as recently taken photos show us, the bird is blue on the right and green on the left. The female Green Honeycreeper bird is appropriately enough colored green, whereas the male is blue.

Now, researchers reporting a study of familiar pet store parakeets--also known as budgies--have new evidence to explain how the birds produce their characteristic yellow, blue, and green feathers.