Their historical region included parts of the Ohio and Mississippi River Valleys, the Great Plains, and southeastern North America.
However, some oral traditions and archeological evidence indicate that Dhegihan speaking peoples may have migrated west out of the Ohio River Valley much earlier.
[2] Other dialectical variants recorded by Dorsey with the same translation include "Ye-ga-ha" (Kansa), "De-ka-ha" (Osage), and "Ugapa" (Quapaw).
Kansa and Osage are mutually intelligible,[3] meaning that they are two distinct dialects of a single language.
The 2nd Annual Dhegiha Gathering in 2012 brought Kansa, Quapaw, Osage, Ponca and Omaha speakers together to share best practices in language revitalization.