Wawa is a Mambiloid language spoken in a region of Cameroon and just inside bordering Nigeria used by about 3,000 people in three main dialects.Gesellschaft für bedrohte Sprachen, "Documenting Wawa – a Mambiloid language in the Cameroon-Nigeria borderland", http://www.uni-koeln.de/gbs/Berichte/Wawa/
All speakers are bilingual, often in Fulfulde.
Further reading
Marieke Martin, A grammar of Wawa: an endangered language of Cameroon, 2012
References