Blue jays aren't blue. Then, what is the real color of this bird?
They look blue to me, but the bird plumage is brown. Really? A brown Blue jay? Are you serious? - License our images here . Yes. All is about light refraction. The real color is brown. Welcome to the world of structural colors. Look for the explanation on this page of The Cornell Lab. The structural colors of the Blue Jay. All is an amazing illusion.