The plain-backed sparrow (Passer flaveolus), also called the Pegu sparrow or olive-backed sparrow, is a sparrow found in Southeast Asia. Its range spans from Myanmar to central Vietnam, and south to the western part of Peninsular Malaysia.
References
Works cited
Book: Giebel, C. G.. Christoph Gottfried Andreas Giebel. 1877. Brockhaus. Thesaurus Ornithologiae. III. German.