Alternate Names: Mbia Chee, Mbya
Dialects: None known. Reportedly similar to Yuqui ,.
Genealogy:
Demographics: 400 (Adelaar 2004), increasing. 30 monolinguals. Ethnic population: 420 (Adelaar 2004). More than half the ethnic group is under 15 years old (Crevels 2007).
Language Use: Parents pass Sirionó on to children, but want them to learn Spanish [spa]. More and more of the children do not acquire the language (Crevels 2007). Religious services. All ages. Positive attitudes. 550 also use Spanish [spa].
Language Development: Literacy rate in L1: 40%. 250 can read, 50 can write. Taught in primary schools. Dictionary. NT: 1977.
Typology: Whistle speech reported.
Writing System: Latin
Nation of Origin: Bolivia
Other Comments: Christian.