The blue wavelength is refracted, which is what allows us to see the feathers as blue in color, according to the Cornell Lab This optical illusion is not unique to blue jays This same trick of the eye gives all bluecolored birds, including indigo buntings and bluebirds, their brightly colored appearance;Seeing blue eggs can be surprising at first!Calls, Blue Jays make a variety of musical sounds, and they can do a remarkable imitation of the scream of a Redshouldered
Bluebird 101 All About Bluebirds Expedition Wildlife
