Yu-bird is a female side character /creaturefromSen to Chihiro no Kamikakushi. It is in it's true form a creature with a raven-like body and a head resembling that of its masterYubaba's. It initially serves as Yubaba's servant / spy. Throughout much of the movie it is transformed into another form referred to as "Haedori" / "Fly-Bird", with the head of a tiny bird, and the body of a fly. It develops an affinity for and is often paired alongsideBouin his transformed mouse form and carries him around.