The Taiwan Blue Magpie is about the size of European Magpie, but with a longer tail. It is 64-65 centimeters in length. Wing measures 18-21 centimeters and tail measures 40 centimeters in length. The plumage of male and female look alike. Its head, neck and breast are black; eyes are iridescent yellow; bill and legs are red; the rest of the plumage on the bird is a rich dark blue to purple in color. It also has white markings on the wings and the tail.