The term 'mythical bird' refers to four different creatures from various mythologies: Garuda (6 letters), ROC (3 letters), PHOENIX (7 letters) and Rukh (4 letters). Garuda is a large bird-like creature from Hindu mythology, often depicted as having the head and wings of an eagle and the body of a human. The ROC is a giant bird from Arabian mythology, said to be so large that it could carry off elephants in its talons. The PHOENIX is a long-lived bird from Greek mythology, said to be reborn from its own ashes. Finally, the Rukh is a giant bird from Persian mythology, said to be so large that it could carry off whales in its talons.