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Red Fox’s Impressive Snow Dive To Hunt Prey | 20 Years of Planet Earth II | BBC Earth - Video học tiếng Anh
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Red Fox’s Impressive Snow Dive To Hunt Prey | 20 Years of Planet Earth II | BBC Earth
Red Fox’s Impressive Snow Dive To Hunt Prey | 20 Years of Planet Earth II | BBC Earth
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Субтитры (44)
0:01
60 million tons of snow now blanket this
0:05
herd's territory.
0:10
Pushing through deep snow is exhausting
0:12
work, and the bison are now slowly
0:15
starving.
0:23
Just keeping warm saps huge amounts of
0:26
energy.
0:32
Their thick coats can insulate them down
0:35
to minus 20° F.
0:38
It's now minus 40.
0:43
The only thing that will keep them alive
0:45
is buried beneath 3 ft of snow.
0:53
And that's a problem shared with a
0:55
surprising neighbor.
1:12
>> [music]
1:14
>> The food of the musk ox is also deep
1:17
beneath the snow.
1:30
The survival of both creatures depends
1:33
on getting through to the ground.
1:40
For the bison, it will be a matter of
1:43
brute
1:43
strength.
1:49
Massive neck muscles enable them to
1:51
shovel 5 tons of snow a day.
2:00
>> Their lightweight neighbor needs more
2:02
precision.
2:30
The bison have reached their goal.
2:33
A mouthful of withered grass.
2:39
And where the bison have dug, the fox
2:42
now spots an opportunity.
2:53
Every footstep counts.
2:58
But he mustn't break through.
3:00
Yet.
3:05
He listens carefully to pinpoint his
3:07
target.
3:14
It's moving.
3:17
>> [music]
3:29
[music]
3:37
>> A vole.
3:40
Small, but a hundred times more
3:42
nutritious than a mouthful of dried
3:45
grass.
3:52
To get through the winter on these
3:54
prairies, sometimes brain beats brawn.
