Relatively little is known about Africa's endangered languages. Unlike indigenous languages in Australia, North Asia, and the Americas, which are predominantly threatened by colonizers, African languages are threatened most immediately by other local languages. As a result, the threat of language extinction is perceived as lower in Africa than in other parts of the globe, and a disproportionate amount of research is devoted to the study of endangered African languages when compared to any other linguistically threatened region in the world. There are approximately 308 highly endangered...