The Kadu languages, also known as Kadugli–Krongo or Tumtum, are a small language family, once included in Kordofanian but since Thilo Schadeberg (1981) widely seen as Nilo-Saharan. However, there is little evidence for either classification, and a conservative classification would treat the Kadu languages as an independent family.There are three branches:Western: Tulishi, Keiga, KangaCentral: Kadugli (incl. Miri, Katcha)Eastern: Krongo, Tumtum↑ ↑