The Maiduan consists of four languages: •
Maiduan •
Maidu (also known as Maidu proper, Northeastern Maidu, Mountain Maidu) •
Chico (also known as Valley Maidu) •
Konkow (also known as Northwestern Maidu) •
Nisenan (also known as Southern Maidu) The languages have similar
sound systems but differ significantly in terms of grammar. They are not
mutually intelligible, even though many works often refer to all of the speakers of these languages as
Maidu. The Chico dialects are little known due to scanty documentation, so their precise genetic relationship to the other languages probably cannot be determined (Mithun 1999), and in any case may have been not a fourth Maiduan language, but widely divergent dialects of Konkow (Ultan 1967). Three of the languages went
extinct by approximately the year 2000. Konkow was reported to have three elderly speakers in 2007. ==Genetic relations==