Mura language

Mura is a language of Amazonas, Brazil. It is most famous for Pirahã, its sole surviving dialect. Linguistically, it is typified by agglutinativity, a very small phoneme inventory (around 11 compared to around 44 in English), whistled speech, the use of tone, and a very limited, perception-based numeral system. In the 19th century, there were an estimated 30,000–60,000 Mura speakers. It is now spoken by only 300 Pirahã people in eight villages.