The Chestnut-breasted Munia (Lonchura castaneothorax), also known as the Chestnut-breasted Mannikin or Bully Bird (in Australia), is a small brown-backed munia with a black face and greyish crown and nape. It has a broad ferruginous breast bar above a white belly. The species is found in Australia, New Caledonia, Indonesia, and Papua New Guinea. This species is also introduced to French Polynesia & France.
In Australia, the Chestnut-breasted Munia is known as a bird of reed beds and rank grasses bordering rivers, in swamp, in grassy country, and mangroves. It is commonly found in cane fields and cereal crops. In dry seasons, it is seen in arid country but always near water. It is also found in grassy woodland.
During the breeding season Chestnut-breasted Muniais mostly seen in pairs, but in late autumn and winter months it congregates in large flocks, at times eating seeds of cereal crops. Chestnut-breasted Munia is a highly sociable species, flocking in large number outside the breeding season. Breeding birds will join groups or flocks when foraging.
Source: en.wikipedia.org/wiki/Chestnut-breasted_Munia – 20.11.2008