What kind of bird is Mi Xiang Runyu's mother?

In "Sweet Honey", Feng Hsu and Runyu are really different, which may be related to their half-brothers! Feng Hsu's mother Cha Yao is a bird princess, and her real body is a phoenix. Feng Hsu's real body is also a phoenix with her mother. Runyu's mother is a mermaid princess, and Runyu's real body is a white dragon and father.