Sun"bird` (?), n. (Zoöl.) (a) Any one of numerous species of small brilliantly colored birds of the family Nectariniidæ, native of Africa, Southern Asia, the East Indies, and Australia. In external appearance and habits they somewhat resemble humming birds, but they are true singing birds (Oscines). (b) The sun bittern.

Sun"bird` (?), n. (Zoöl.) (a) Any one of numerous species of small brilliantly colored birds of the family Nectariniidæ, native of Africa, Southern Asia, the East Indies, and Australia. In external appearance and habits they somewhat resemble humming birds, but they are true singing birds (Oscines). (b) The sun bittern.