How does sister exchange work in Bambuti marriage customs?

Among the Bambuti people of the Ituri Forest, marriage is traditionally conducted through a system of sister exchange. In this practice, a man is required to arrange for a female member of his own clan to marry a man from his prospective bride’s clan.1

This reciprocal arrangement serves to create and maintain a symmetrical alliance between two groups. By exchanging women, the clans ensure that the marriage bond is balanced, as each group provides a bride to the other. This custom is consistent with the Bambuti's social structure, which is organized into patrilineal groups. These unions are typically monogamous, and the resulting family bonds are considered strong and lasting.21