Elinye lamava amahle okuhamba eCanada kukhenketha indawo yokuhlala yezilwanyana zasendle. Iibhere ezimhlophe, iimpungutye zearctiki, icaribou, hares, imikhomo ye-beluga, iingcuka kunye neeelk zezimbalwa zezilwanyana ezikhula kwi-tundra kunye neqhwa eliqhaqhazelis 'amazinyo lomntla weKhanada kunye neArctic Circle.
Baye bahlengahlengisa imeko-bume yamaxesha onyaka kwaye basebenzise ubusika kakhulu, xa iibhere ezimhlophe zisemkhenkceni, umzekelo. Abatyeleli kulo mmandla baya kuba noloyiko ngezibane zaseMantla kwaye bachukunyiswe ziindawo ezinkulu, ezizolileyo, ezivulekileyo nezingafakwanga ndawo.
Kwelinye icala, iingcuka zaseArctic zezona zizizilwanyana ezihlasela lo mmandla. Banokulinganisa malunga ne-1.8 yeemitha ukusuka empumlweni ukuya emsileni, ubukhulu becala zimhlophe ngombala, kuba isebenza njengokuzifihla ekhephini. Kwaye abazingeli nje kuphela iinkomo neenyamakazi, kodwa baziingcali zokujoja imingxunya aphefumla ngayo amatywina.
Umzekelo, ngaselunxwemeni lwee-Ellesmere Islands, iingcuka ziye zanyathela amatywina iminyaka engatyibilikisi ngokuzibetha zishushu emkhenkceni ehlotyeni.
Elona xesha lilungileyo lokubona iibhere ezimhlophe liphakathi kukaJanuwari no-Epreli, ngelixa elona xesha lilungileyo lokubukela iminenga liphakathi kukaJuni no-Agasti. Kwaye ukonwabela iiLights zaseMantla kuphakathi kukaSeptemba no-Okthobha ukusukela ngoJanuwari ukuya kuMeyi.