285,000 (2010 UNSD). L2 users: 13,300. No monolinguals.
Southern Nations, Nationalities, and Peoples’ region, Central North Omo zone, south tip of Ethiopia plateau, near the Hamer-Banna [amf] language area.
Bako (Baco), Biyo (Bio), Laydo, Seyki, Shangama, Sido, Wubahamer (Ubamer), Zeddo. Reportedly similar to Gayil [gyl].
Patrilineal. Traditional religion, Christian.