0 s ▁and ▁h unted ▁b ison ▁in ▁the ▁Y ellow stone ▁area ▁until ▁game ▁went ▁scar ce ▁during ▁the ▁next ▁de cade . ▁ ▁Indian ▁agents , ▁with ▁ins u fficient ▁funds , ▁accepted ▁long ▁hunting ▁exped itions ▁of ▁the ▁Fl at head ▁and ▁P end ▁d ' O re ille ▁to ▁the ▁pla ins ▁in ▁the ▁late ▁ 1 8 7 0 s . ▁In ▁the ▁early ▁ 1 8 8 0 s , ▁the ▁buff alo ▁were ▁gone . ▁ ▁Gros ▁V entre ▁Indians ▁left ▁the ▁Fort ▁Bel kn ap ▁Indian ▁Res ervation ▁in ▁Mont ana ▁for ▁a ▁h unt ▁north ▁of ▁Mil k ▁River ▁in ▁ 1 8 7 7 . ▁Chief ▁Jerry ▁Running ▁Fish er ▁en list ed ▁as ▁sc out ▁at ▁Fort ▁Ass inn ib o ine ▁in ▁ 1 8 8 1 . ▁" H is ▁camp ▁stayed ▁close ▁to ▁the ▁troops ▁when ▁they ▁pat rolled , ▁so ▁they ▁h unted ▁und ist urbed ▁by ▁enemy ▁tribes ." ▁Two ▁years ▁later , ▁the ▁buff alo ▁were ▁all ▁but ▁gone . ▁ ▁In ▁June ▁ 1 8 8 2 , ▁more ▁than ▁ 6 0 0 ▁Lak ota ▁and ▁Y ank ton ai ▁hun ters ▁located ▁a ▁big ▁her d ▁on ▁the ▁pla ins ▁far ▁west ▁of ▁the ▁Stand ing ▁Rock ▁Agency . ▁In ▁this ▁last ▁h unt , ▁they ▁got ▁around ▁ 5 , 0 0 0 ▁animals . ▁ ▁B ison ▁population ▁crash ▁and ▁its ▁effect ▁on ▁ind igen ous ▁people ▁Following ▁the ▁Civil ▁War