130,000 in Chad (2006). Population total all countries: 233,000.
Mayo-Kebbi Est region: Mayo-Boneye department, Bongor subprefecture, along Logone river; small enclave in Chari-Baguirmi region.
Bongor, Bugudum (Budugum), Domo, Gizay (Gisey, Guissey), Gumay (Goumaye), Ham, Walia (Walya), Wina (Viri), Yagwa (Yagoua). All dialects understand Yagoua dialect well; Gizay and Yagoua dialects are 80% mutually intelligible. Lexical similarity: 97% between the Budugum dialect and the most similar other dialect.
Latin script [Latn].
Traditional religion, Christian.