ds ▁that ▁stretch ed ▁to ▁the ▁horizon ▁were ▁a ▁sympt om ▁of ▁an ▁e col ogy ▁out ▁of ▁balance , ▁only ▁rendered ▁possible ▁by ▁dec ades ▁of ▁heav ier - than - aver age ▁ra inf all . ▁ ▁Other ▁evidence ▁of ▁the ▁arrival ▁circa ▁ 1 5 5 0 – 1 6 0 0 ▁in ▁the ▁sav ann as ▁of ▁the ▁eastern ▁se ab o ard ▁includes ▁the ▁lack ▁of ▁places ▁which ▁sout heast ▁n atives ▁named ▁after ▁buff alo . ▁B ison ▁were ▁the ▁most ▁numerous ▁single ▁species ▁of ▁large ▁wild ▁m amm al ▁on ▁Earth . ▁ ▁Russ el ▁Me ans ▁states ▁that ▁b ison ▁were ▁killed ▁by ▁using ▁a ▁method ▁that ▁co y otes ▁implemented . ▁Co y otes ▁will ▁sometimes ▁cut ▁one ▁b ison ▁off ▁from ▁the ▁her d ▁and ▁ch ase ▁it ▁in ▁a ▁circle ▁until ▁the ▁animal ▁col lapsed ▁or ▁gave ▁up ▁due ▁to ▁exhaust ion . ▁▁▁▁▁▁ ▁Working ▁on ▁foot , ▁a ▁few ▁groups ▁of ▁Native ▁Americans ▁at ▁times ▁used ▁fires ▁to ▁channel ▁an ▁entire ▁her d ▁of ▁buff alo ▁over ▁a ▁cl iff , ▁killing ▁far ▁more ▁than ▁they ▁could ▁use . ▁The ▁O ls en – Ch ub bu ck ▁arch ae ological ▁site ▁in ▁Colorado ▁reve als ▁some ▁techniques , ▁which ▁may ▁or ▁may ▁not ▁have ▁been ▁widely ▁used . ▁The ▁method ▁involves ▁skin ning ▁down ▁the ▁back ▁in ▁order ▁to ▁get ▁at ▁the ▁tender ▁meat ▁just ▁beneath ▁the ▁surface , ▁the ▁area ▁known ▁as ▁the ▁" h atch ed ▁area ".