400 (1993 SIL), decreasing.
Western and Southern Highlands provinces, west and southwest of Bosavi.
Fully bilingual in Kaluli [bco] In 1993. It was difficult to find speakers able to give Sonia (not Kaluli) words for a wordlist.
Literacy rate in L1: Below 5%. Literacy rate in L2: Below 5%. In 1993 children went to school in Kaluli areas.