Ehret controversially includes the divergent Berta language in Kir-Abbaian, alongside (Eastern) Jebel in a branch he calls Jebel, but this is rejected by other historical linguists, and Berta is best considered an isolate within Nilo-Saharan pending further research.
Ehret controversially includes the divergent Berta language in Kir-Abbaian, alongside (Eastern) Jebel in a branch. He calls Jebel a branch. This is rejected by other historical linguists. Berta is best considered an isolate within Nilo-Saharan pending further research.