9789 Shuar 10000-99999 53,309 Shiwiar Chicham: 579 speakers (612 population)
Shuar (Chicham): 42,261 speakers (52,697 population)

(It is not clear whether these two belong together as the same language, or whether Shiwiar Chicham -- which does not match up clearly with the languages of others' classifications -- may belong to a different Jivaroan language.) Language endangerment in South America: The clock is ticking. On 42,840 10000-99999