Chestnut Munia
Lonchura atricapilla
Small, sexes alike, races differ slightly in intensity of colour. In L. a. jagori, the adult has the whole head, breast, centre of belly, and undertail coverts black; the back, wing, and sides of belly chestnut, brighter on underparts, duller on wings; uppertail coverts dark reddish brown, underpart buff; uppertail coverts and tail as adult. Bill silvery grey; eye chestnut; legs gray.
ID text from Wikipedia, CC BY-SA 4.0
Scaly-breasted Munia
Lonchura punctulata
The scaly-breasted munia is about 11–12 centimetres (4.3–4.7 in) long and weighs 12–16 grams (0.026–0.035 lb). The adult has a stubby dark bill typical of grain eating birds, brown upperparts and a dark brown head. The underparts are white with dark scale markings. The sexes are similar, although males have darker markings on the underside and a darker throat than females.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Chestnut Munia and Scaly-breasted Munia.