The Aka, Asua, Baka, Efe, and Mbuti are relatively mobile; they live in temporary spherical huts. The Bongo, Kola, and Twa tend to be more sedentary; they build rectangular, mud-thatch village houses. Average camp sizes of the Aka, Baka, Efe, and Mbuti are relatively small, ranging from 17.8 inhabitants among the Efe to 37.4 among the Mbuti. Baka and Efe camps tend to be closer to villages than are Aka and Mbuti camps (4 to 8 kilometers versus 5 to 40 kilometers).
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