Ov"en*bird` (?), n. (Zoöl.) (a) Any species of the genus Furnarius, allied to the creepers. They inhabit South America and the West Indies, and construct curious oven-shaped nests. (b) In the United States, Seiurus aurocapillus; -- called also golden-crowned thrush. (c) In England, sometimes applied to the willow warbler, and to the long-tailed titmouse.