Bali-Bali, Bouli, Peul, Balami, Yankasa Bororo (western Sudan), Fellata (western Sudan)
The coat colour is black and white pied, black on fore and white on hind quarters with a typical clean dividing line; the Bali-Bali variety is all white; the coat is short and coarse; the head is long and heavy with flat forehead and a slightly convex profile; horns present in males but may be absent in females; male horns are spirally twisted, growing horizontally out from the head; female horns are short and fine; ears are pendent and long; back line is long and dipped; the Yankasa variety has white coat colour with black patches on ears and around the eye, muzzle and on top of tail; ears are semi-pendent (Wilson, 1991).
There is considerable confusion of terminology for sheep type. In Niger the pied (Oudah bicolore) and white (Bouli) varieties are considered to be colour variants. In Nigeria the white type is called the Balami and generally accorded full breed status. In Chad and northern Cameroon the pied type is known as Foulbe and the white type as Waila. The Bali-Bali is sometimes considered a separate type and not just a synonym in Niger. In general the Uda sheep inhabit the semi-arid mono-modal rainfall lowlands and adjoining arid areas of southern Niger, northern Nigeria, central Chad, western Sudan and parts of Cameroon; the production systems are agro-pastoral and pastoral transhumant; the Ara Ara variety inhabits the semi-arid areas of south-central and central Niger under pastoral and agro-pastoral management; the Yankasa variety inhabits semi-arid and subhumid areas of northern and north-central Nigeria; Yankasa is the Hausa word for local (Wilson, 1991).
The hairy, thin tailed type of sheep like the Uda originated in western Asia, and entered Africa through the Isthmus of Suez and Bab el Mandeb. Until the third Millennium BC, the hairy thin-tailed sheep was the only type of sheep on the African continent. Domestic sheep had reached Egypt and other parts of North Africa by 5000 BC (Epstein, 1971).