White-rumped Munia

The white-rumped munia, or white-rumped mannikin, is a small estrildid finch, 10–11 cm long with a stubby grey bill and a long black pointed tail. It is a resident breeder from the Indian subcontinent through South-east Asia to southern China, Taiwan and Sumatra, frequenting open woodland, grassland and scrub, and it adapts well to agricultural land. Several subspecies are recognised, including swinhoei in the east. (Wikipedia, general species account)

Adults are brown above and on the breast, lighter below, with a white rump. The nest is a large domed grass structure in a tree, bush or grass holding three to eight white eggs. Its hybrid with other munias, with many plumage variants, is thought to have been established by aviculturists in Japan. (Wikipedia, general species account)