shehe is s ready to m move. > reorter:: that was f fast. wow. > t that is motheher nature , gettingg them m moving right qu. reporteter: the fort peckck buffffalo prograram a as part ta project reintntroduce bisison to tribal ran t throughout thee coununtry, using animals from yellowstone natioional park.. the herd at yellowswstone is ner its s regulated d capacity, , ae to sololow s has come a a bactel disesease thahat canan infecectd to stillbirtrths and catattle, e the park,k, so the o only way bn are ablble to leaveve yellllowstone isis by complpletd up to o three yearar quarantinit cuculminates i in a tesesting fy in fort pepeck. it s m morning, wewe re goino leararn to thehe running a alle. repeporter: cororralling 7676 headad of buffalo.. u unwilling b buffalo. [laughs] come o on, get thehem down ther! come on,n, come on!! moveve it! tagged h him. time to see. nice. there yoyou go. wowow. [l[laughter] this way.