▁Mont ana , ▁the ▁better - ar med ▁Black foot ▁pushed ▁the ▁K uten ai , ▁Fl at head ▁and ▁Sh osh one ▁off ▁the ▁pla ins . ▁In ▁the ▁start ▁of ▁the ▁ 1 9 th ▁century , ▁they ▁claimed ▁the ▁buff alo ▁ranges ▁entirely ▁to ▁the ▁Rock y ▁Mountains ▁and ▁fought ▁all ▁conce ived ▁as ▁intr ud ers . ▁The ▁less ▁numerical ▁tribe ▁pe op les ▁west ▁of ▁the ▁contin ental ▁divide ▁did ▁not ▁accept ▁this . ▁Their ▁ancest ors ▁had ▁h unted ▁on ▁the ▁Great ▁Pla ins ▁and ▁they ▁would ▁continue ▁the ▁tradition ▁at ▁all ▁cost . ▁" When ▁we ▁go ▁to ▁h unt ▁B ison , ▁we ▁also ▁prepare ▁for ▁war ▁with ▁the ▁P ee ag ans ▁[ P ieg an ▁Black fe et ] ▁and ▁their ▁al lies ", ▁revealed ▁a ▁Fl at head ▁chief . ▁A ▁K uten ai ▁gave ▁this ▁description ▁of ▁trib al ▁hun ts ▁during ▁buff alo ▁days , ▁" Ac ross ▁the ▁mountains ▁they ▁went ▁out ▁on ▁the ▁pra irie , ▁but ▁they ▁were ▁afraid ▁of ▁the ▁P ieg ans ." ▁ ▁L oss ▁of ▁food ▁source ▁ ▁Trib es ▁forced ▁away ▁from ▁the ▁game ▁rich ▁areas ▁had ▁to ▁try ▁their ▁luck ▁on ▁the ▁edges ▁of ▁the ▁best ▁buff alo ▁habit ats . ▁Small ▁tribes ▁found ▁it ▁hard ▁to ▁do ▁even ▁that . ▁Due ▁to ▁attacks ▁in ▁the ▁ 1 8 5 0 s ▁and ▁ 1 8 6 0 s , ▁the ▁village ▁Indians ▁of ▁the ▁Upper ▁Missouri ▁" hard ly ▁d