This language is part of the More Languages section.
Sena
This language is spoken most in Nsanje and Chikwawa district in the the southern part of the Malawi. It is spoken by about a quarter million people.
Ethnologue has a page at http://www.ethnologue.com/show_language.asp?code=swk
How close is this to other Sena languages, such as Sena in Mozambique?