Pfupisa nyaya yacho:  Nzombe dzomusango dzakabudirira kuiswazve muUnited States kuti dzifambe dzakasununguka mumapani eAlaska kwenguva yokutanga mumakore anopfuura zana. Nguva yacho yakatorwa pavhidhiyo uye inoratidza Alaska Department of Fish and Game Biologist Tom Seaton achitungamirira nzombe dzomusango 100 kurusununguko ari pamotokari inofamba nesinou. Zvipembenene zvepanyika zvakasunungurwa kubva muchivako chenguva pfupi, umo zvakanga zvachengetwa kweinopfuura vhiki imwe chete munguva yokuchinja, uye zvakatevera VaSeaton kumusha wavo mutsva. Vakafamba chinhambwe cheinenge kiromita imwe ndokuyambuka Rwizi Innoko vasati vasvika paminda ine uswa yeLower Innoko, yakakomberedzwa norwizi Yukon. Nzou dzomusango imhuka huru dzinoyamwisa dzomunyika dzokuNorth America, asi rudzi rwomunzvimbomo rweAlaska rwakanyangarika munyika yacho anopfuura makore 100 apfuura. Muvhidhiyo yacho mhuka dzacho dzinogona kuonekwa dzichidzingirira motokari inotasva chando dzichifamba dziri mumapoka dziri padivi penzira yakavharwa. Nzou dzomuti dzakatengwa kubva kuCanada dzichiendeswa kuAlaska Wildlife Conservation Center muna 2008 asi kudzorerwa kwemarudzi aya ari kutyisidzirwa kwakanonoka. Vanhu vemhuka dzomusango dzinoshevedzwa kuti wood bison vakabudirira kudzorerwa kuUnited States kokutanga mumakore anopfuura zana. Nyanzvi yezvinhu zvipenyu yeDhipatimendi reAlaska reHove neMitambo Tom Seaton akatungamirira nzombe dzomusango 100 kurusununguko ari mubhazi remotokari. Varidzi venyika vakanga vasingadi kuti nzvimbo yavo iratidzwe senzvimbo inokosha yokugara ine mamwe marongero ehurumende. Hurumende dzenyika nehurumende yemubatanidzwa dzakabvumirana kurangarira nzombe dzomusango dzeAlaska se'dzinoedza' pasina zvinodiwa neEndangered Species Act. Vachibatsirwa nemakambani uye masangano asingabatsiri, dhipatimendi racho rakaendesa mombe 50 uye vana 50 vaiva nemakore maviri zvichidzika kumusha wacho. Asi basa racho rakanga risina ngozi sezvo mhuka huru dzaigona kupwanywa makumbo kana kuti kudonha, dzotsikwa-tsikwa. Nzombe mbiri dzomusango dzakatorwa mifananidzo dzichifura paAlaska Wildlife Conservation Center muPortage, Alaska. Mombe dzehove dzinosara uye dzinofura paAlaska Wildlife Conservation Center muPortage, Alaska. Nyanzvi yezvinhu zvipenyu yeDhipatimendi reHove neMitambo yeAlaska, Cathie Harms, yakati: "Paunenge uri...
Alaska Department of Fish and Game biologist yakaendesa mhuka. Mhuka dzinoyamwisa dzomunyika dzaitevera motokari yake yechando ichidonhedza mabhora ealfalfa. Vakafamba mamaira ndokuyambuka Rwizi Innoko kuenda kuLower Innoko. Nzvimbo itsva yacho inofanira kutanga kubudisa maruva ayo bhisoni inogona kudya.