Twa populations according to Hewlett & Fancher. From west to east: Ntomba, Kasai, [unidentified], Great Lakes, Nsua [not clear if Nsua is Twa].
Twa populations according to Stokes. Only a few groups are shown, but these include several between the Kasai and Great Lakes Twa.
Twa/pygmoid populations according to Cavalli-Sforza. Several southern groups are added.
Twa populations scattered through shaded area, according to Blench. Several southern Twa areas are shown.
The Twa (Batwa, also Cwa "IPA /tʃwa/) are a group of "African Pygmy (Central African foragers) peoples, tribes or castes who live interdependently with agricultural "Bantu populations, providing the farming population with "game in exchange for agricultural products.
It is often supposed that the Pygmies were the aboriginal inhabitants of the forest before the advent of agriculture. "Vansina argues that the original meaning of the ("Proto-Bantu) word *twa was ""hunter-gatherer, bushpeople", alongisde yaka used for the western (Mbuti) pygmies ("Bayaka). As the Twa developed into full-time hunter-gatherers, the words were conflated,["clarification needed] and the ritual role of the absorbed aboriginal peoples was transferred to the Twa.["clarification needed] Batwa and Abatwa are Bantu plural froms, translating to "Twa people".
All Pygmy and Twa populations live near or in agricultural villages. Agricultural Bantu peoples have settled a number of "ecotones next to an area that has game but will not support agriculture, such as the edges of the rainforest, open swamp, and desert. The Twa spend part of the year in the otherwise uninhabited region hunting game, trading for agricultural with the farmers while they do so.
Roger Blench has proposed that Twa (Pygmies) originated as a "caste like they are today, much like the "Numu blacksmith castes of West Africa, economically specialized groups which became "endogamous and consequently developed into separate ethnic groups, sometimes, as with the "Ligbi, also their own languages. A mismatch in language between patron and client could later occur from population displacements. The short stature of the "forest people" could have developed in the millennia since the "Bantu expansion, as happened also with Bantu domestic animals in the rainforest Perhaps there was additional selective pressure from farmers taking the tallest women back to their villages as wives. However, that is incidental to the social identity of the Pygmy/Twa.["clarification needed]
Twa live scattered throughout the "Congo. In addition to the "Great Lakes Twa of the dense forests under the "Ruwenzoris, there are notable populations in the "swamp forest around "Lake Tumba in the west (about 14,000 Twa, more than the Great Lakes Twa in all countries), in the forest–"savanna swamps of "Kasai in the south-center, and in the savanna swamps scattered throughout "Katanga in the south-east, as in the "Upemba Depression["citation needed] with its "floating islands, and around Kiambi on the "Luvua River.
Among the "Mongo, on the rare occasions of caste mixing, the child is raised as Twa. If this is a common pattern with Twa groups, it may explain why the Twa are less physically distinct from their patrons than the Mbenga and Mbuti, where village men take Pygmy women out of the forest as wives.
The Congolese variant of the name, at least in Mongo, Kasai, and Katanga, is Cwa.
The Batwa of Uganda were forest dwellers who lived by gathering and hunting as the main source of food. They are believed to have lived in the "Bwindi Impenetrable and "Mgahinga National parks that border "Democratic Republic of Congo (DRC) and "Rwanda living mainly in areas bordering other Bantu Tribes.
In 1992, the lives of the Batwa pygmies changed forever. The Bwindi Impenetrable Forest became a national park and "World Heritage Site to protect the 350 endangered "mountain gorillas within its boundaries. The Batwa were evicted from the park. Since they had no title to land, they were given no compensation. The Batwa became "conservation refugees in an unfamiliar, unforested world. Poverty, drug and alcohol abuse, lack of education facilities, HIV as well as gender-based violence and discrimination are higher among Batwa communities than among the neighboring, Bantu communities.
The southern Twa today live in close economic symbiosis with the tribes among which they are scattered—Ngambwe, Havakona, Zimba and "Himba. None of the individuals I have observed differs physically from the neighboring Bantu.
The Twa of these countries live in swampy areas, such as the Twa fishermen of the "Bangweulu Swamps, "Lukanga Swamp, and "Kafue Flats of "Zambia; only the Twa fish in "Southern Province, where the swampy terrain means that large-scale crops cannot be planted near the best fishing grounds.
Cavalli-Sforza also shows Twa near "Lake Mweru on the Zambia–Congo border. There are two obvious possibilities: the "Luapula Swamps, and the swamps of "Lake Mweru Wantipa. The latter is Taabwa territory, and the Twa are reported to live among the Taabwa. The former is reported to be the territory of Bemba-speaking Twa.