▁thousand ▁b ison ▁from ▁the ▁Y ellow stone ▁Park ▁B ison ▁H erd ▁have ▁been ▁killed ▁in ▁some ▁years ▁when ▁they ▁w ander ▁north ▁from ▁the ▁L amar ▁Valley ▁of ▁Y ellow stone ▁National ▁Park ▁into ▁private ▁and ▁state ▁lands ▁of ▁Mont ana . ▁This ▁hunting ▁is ▁done ▁because ▁of ▁fear s ▁that ▁the ▁Y ellow stone ▁b ison , ▁which ▁are ▁often ▁inf ected ▁with ▁Bru cell osis ▁will ▁spread ▁that ▁disease ▁to ▁local ▁domestic ▁cattle . ▁To ▁date ▁no ▁cred ible ▁instance ▁of ▁b ison ▁to ▁cattle ▁transmission ▁has ▁ever ▁been ▁established , ▁recorded ▁or ▁proven ▁although ▁there ▁is ▁some ▁evidence ▁of ▁transmission ▁between ▁wild ▁car ib ou ▁and ▁b ison . ▁ ▁Ut ah ▁The ▁State ▁of ▁Ut ah ▁maintain s ▁two ▁b ison ▁her ds . ▁B ison ▁hunting ▁in ▁Ut ah ▁is ▁permitted ▁in ▁both ▁the ▁Ant el ope ▁Island ▁b ison ▁her d ▁and ▁the ▁Henry ▁Mountains ▁b ison ▁her d ▁though ▁the ▁lic enses ▁are ▁limited ▁and ▁tight ly ▁controlled . ▁ ▁A ▁Game ▁R anger ▁is ▁also ▁generally ▁sent ▁out ▁with ▁any ▁hun ters ▁to ▁help ▁them ▁find ▁and ▁select ▁the ▁right ▁b ison ▁to ▁kill . ▁ ▁In ▁this ▁way , ▁the ▁hunting ▁is ▁used ▁as ▁a ▁part ▁of ▁the ▁wild life ▁management ▁strategy ▁and ▁to ▁help ▁c ull ▁less ▁des irable ▁individuals . ▁ ▁Every ▁year ▁all ▁the ▁b ison ▁in ▁the ▁Ant el ope ▁Island ▁b ison ▁her d ▁are ▁rounded ▁up ▁to ▁be ▁exam ined ▁and ▁v acc in ated .