The white-rumped munia is a small bird marked by its white rump. Wild birds eat grass seeds and form flocks near grassland and farmland.
Its back is brownish black, its rump is white, and its chest and belly are off-white. The upper bill is black and the lower bill is grey. The legs are dark grey.
In their native range, wild birds often forage in small groups and may form larger flocks outside the breeding period. They eat seeds from grasses and other herbaceous plants. In the native range, breeding occurs year-round, with a peak from June to September; a clutch has 4–6 eggs.
An extinction-risk assessment has not been added yet.