Information from: “Otoe-Missouria Language Department” . Campbell, Sky The Otoe-Missouri Tribe
"Welcome to the official website of the Otoe-Missouria tribe’s Language Department. Our goal is to preserve and revitalize the Otoe-Missouria language."
Information from: “North America” (7-41) . Victor Golla and Ives Goddard and Lyle Campbell and Marianne Mithun and Mauricio Mixco (2008) , Chris Moseley and Ron Asher · Routledge
Possibly extinct; Semi-speaker number (4) is also questionable; Chiwere dialects: Otoe-Missouria (Jiwere) is the dialect of the Otoe-Missouria Tribe. Iowa (Baxoje) is the dialect of the Iowa Tribe. The total Chiwere population is about 1,150, but in 1999 only four passive first-language speakers of the Otoe-Missouria dialect remained, none fluent.
DATE OF INFO
Information from: “Ethnologue: Languages of the World, 18th Edition” . Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig · SIL International
"Last fluent speakers of Iowa and Oto died in 1996 (1997 J. GoodTracks)." "Ethnic population: 1,150 (Golla 2007)."
DATE OF INFO
MORE ON VITALITY
"Language preservation activities taking place in Oklahoma."
Information from: “The World Atlas of Language Structures” . Bernard Comrie and David Gil and Martin Haspelmath and Matthew S. Dryer · Oxford University Press
Information from: “Encyclopedia of the World's Endangered Languages” . Christopher Moseley (2007) Routledge
100 percent certain, based on the evidence available