The Black Munia Lonchura stygia is a species of estrildid finch found in New Guinea, from Mandum (Papua, formerly known as Irian Jaya, Indonesia) to Lake Daviumbu, Papua New Guinea. It is commonly found in flocks of maximum 20 birds, inhabiting savannas, wetlands, but sometimes they were also seen at rice crops.
This species is threatened by the destruction of reedbeds due to introduce of rusa deer Cervus timorensis. And also probably threatened by encroachment of woodland on grasslands, due to increased of the livestocks such as pigs. It is also engaged in cage-bird trade.