I didn't suss until recently that Nigeria has an indigenous ethnic Arab population - the Shuwa who are settled around Maidugiri. They speak the shuwa dialect of Arabic. When I've heard Nigerians talk about the Shuwa it is always in a positive light: how beautiful they are (light skin colour, high cheekbones etc), what a warm and gentle people they are etc. A little bit of online digging, and I discovered the Shuwa are also known as the Baggara, a cattle-herding nomadic tribe originally (five hundred or more years ago) from Libya. The Baggara are more populous in Darfur. Click here for more info.