The buffalo continue to regain their strength and weight on the spring grass.
野牛們繼續通過吃春季的牧草來保持自己的力量和體重。
But their search for this fresh feed can take them many miles from the wolf den site.
牠們尋找肥美牧草的同時也讓牠們離狼窩越來越遠。
The calves are growing all the time. They will be getting harder for the wolves to catch and kill.
小牛犢們一天天長大。狼群們越來越難捕獲和殺死牠們了。
The summer season pushes the wolves from both ends - the prey is more difficult to find and kill and yet, the need for more food is increasing all the time.
夏季讓狼群們陷入兩難的絕境,獵物越來越難被發現和捕獲牠們所需的食物量與日俱增。
And although the pups are quite small, they grow fast.
盡管狼崽們還很小,但牠們長的很快。
It puts a lot of pressure on the hunting adults.
獵捕成年獵物的壓力越來越大了。
It's been two weeks since I've seen the wolves make a kill.
距離上次捕獵已經過了兩個星期了。
Storm and Susie head off with one of their eldest offspring.
"風暴" "蘇西"還有牠們的長子出發捕食了。
I often wonder how it is that wolves know which direction to go.
我經常很好奇狼群們怎么知道究竟要去哪?
It's a big country to search, but they do have a keen sense of smell.
大海撈針,但牠們有敏銳的嗅覺。
They can tell when a herd has passed through, even two or three days before.
牠們能辨認出野牛群何時從這經過,即便是兩三天之前。
The scent has led the wolves into the forest. The buffalo could be anywhere around here.
氣味指引著牠們走進樹林。野牛就在這附近。