Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth

Jul 03, 2026 16:09 · 30:44 · English · Whisper Turbo · 3 Qof-dheer
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In this area of northern Kenya,
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almost one in five herds are orphan herds.
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This one is led by
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a young 13 -year -old female called Habiba.
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So young,
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she lacks the knowledge and experience needed to keep them safe.
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The life of this young herd hangs constantly
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in the balance.
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Just one wrong decision can be fatal,
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as another orphan group discovered a few years ago.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Their inexperienced leader decided to cross a river when it was in full
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flood.
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A huge error in judgment that put the lives
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of the young calves in danger.
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This
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
family was lucky.
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The calves were washed ashore.
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But it's a reminder of how important an older,
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knowledgeable leader is.
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Habiba
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has a lot on her plate.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Not only does she have the huge responsibility of keeping her herd
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
safe,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
She's also a first -time mother,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Tuzawadi,
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who's already proving quite a handful.
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Only
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a year old,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
he's a plucky little character,
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always wandering off on his own.
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Keeping
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him safe is a full -time job in itself.
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In such
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difficult terrain,
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good tracking skills are essential to work out where Matt has moved to
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since his last known position.
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A
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fresh footprint is just the sign the team need.
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The position of the front toe shows that Matt is heading south.
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But it's too risky to track
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a seven -tonne must elephant on foot in thick brush.
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So the team must navigate their way in by jeep.
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Soon,
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Matt is in sight.
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And he's not alone.
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He's
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in hot pursuit of a female.
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And the fact that he's guarding her suggests she's
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an oestrus and ready to mate.
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But there are plenty of younger bulls here,
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and they're all interested in her too.
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For
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the next few days,
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until the female is no longer receptive,
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Matt must guard her 24 -7.
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He
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also needs to show the young bulls who's boss.
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As
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he sees off the competition,
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the crew get caught in the action.
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But
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as they move out of the way,
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they run into more trouble.
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It's
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not a good time to get stuck on a log.
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Luckily, Matt is busy with the younger males.
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Having
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finally found a receptive female,
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Matt won't have a chance to mate unless he can get her away from
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the other males.
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And that's no mean feat.
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The
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latest tracking data shows that this year's gathering will soon be coming to
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an end.
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As the vegetation in
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the reserve starts to dry up,
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the elephants will take their cue and begin their journey home.
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Bulls
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will be dropping out of must and moving on.
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and families will begin to disperse,
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heading back to their home ranges across northern
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Kenya.
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It's
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a bittersweet time for the scientists,
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as the constant threat of poaching means there's no certainty of
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seeing elephants like Matt again.
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With
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the herd soon disappearing,
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time is running out for Habiba and her family to find help.
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But
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her caller tells us she's heading in the direction of a well -established herd.
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Its leader is an experienced 50 -year -old tuskless matriarch,
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the ideal kind of female for Habiba to learn
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from. Little
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Zawadi makes the first move and approaches a calf in the group.
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He's
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put in his place with a gentle nudge,
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but he doesn't retreat far.
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At
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last, they seem to have found a herd that will tolerate them.
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Desperate for a playmate,
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it's not long before Zawadi finds a slightly older calf willing
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to be his sparring partner.
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This
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is just the kind of interaction he needs.
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To grow into a majestic
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bull like Matt,
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capable of fighting off rival males,
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it's vital that he gets to play fight first within a family group like
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this one.
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After
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the two herds have been mingling for a while,
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something remarkable happens.
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As the tuskless matriarch leads her group away,
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the orphan herd leaves with them.
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Both
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families are now moving as one.
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Against
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all odds,
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the orphans have finally found a family willing
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to help them.
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At last,
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little Zawadi,
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Habiba and the others have older elephants to learn from.
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Elephants who will hopefully give them the support they so desperately
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need.
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As the number of orphan herds increases,
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scientists are discovering that elephants are finding new ways
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to adapt.
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An intelligent,
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hyper -social species is learning to respond to
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the new challenges it faces.
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Over
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the past month,
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Samburu National Reserve has been the setting for a remarkable
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gathering.
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Using data from satellite collars,
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this has been a unique opportunity to see how young orphan
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herds are coping with the loss of their matriarchs.
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How bull elephants
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select females to pass on their legacy.
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and to witness incredible new elephant behavior.
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It's a lone wolf.
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Now
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that it's broken cover,
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the wolf is easy for the caribou to spot.
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It's
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taking a chance.
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A fully grown caribou weighs twice as much as the wolf does
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and has a powerful kick.
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But the opportunity of a prize kill is
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worth the risk.
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Having
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panicked the herd,
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the wolf looks for a weaker or slower individual.
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As the herd splinters and reforms,
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some of the caribou lose sight of their attacker,
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giving the wolf its opportunity.
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The
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wolf must grab the caribou by the throat.
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But one well -aimed hoof could end this battle
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in the caribou's favour.
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Survival
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is finely balanced up here.
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This
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time, the wolf has won.
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With just ten days left to calving,
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time is against them.
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Taking the mountain route will add miles to the journey,
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causing a potentially disastrous delay.
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It would also bring them into contact
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with more predators.
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Just ahead,
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a bear is on the prowl.
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Despite
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the strong currents,
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the herd is forced to cross the river.
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The
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lead female enters the water and the others follow.
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This could be a catastrophic mistake.
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The force of the meltwater has created a powerful set of rapids.
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But
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the caribou forge ahead regardless.
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The
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
lead animals are struggling to make progress and are
14:39
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
regularly sucked under by the powerful eddies.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
rapids are overwhelming.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Before long,
15:20
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the rest of the caribou have beaten a retreat.
15:23
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
With nowhere left to turn,
15:26
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they opt for the mountain route.
15:28
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But that means heading
15:32
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
directly towards a bear.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
And he isn't alone.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
A
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
wolf slips through the trees below the caribou.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Perhaps
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
sensing the danger,
16:03
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they change course again,
16:05
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
returning to the river further upstream.
16:08
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
And from here,
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
there's only one option.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
At this point,
16:16
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the river is slightly shallower than the first spot they tried,
16:20
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but the current is still strong.
16:22
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
older females in the group lead the way again.
16:29
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Suddenly,
16:33
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
a yearling drifts away from its mother.
16:36
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Even
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
some of the adults are struggling.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
yearling is out of its depth,
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
on its own and heading towards the rapids.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But she has one thing on her side.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Caribou fur is hollow to help insulate against the cold,
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
which means
17:27
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
she can float.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's
17:40
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
been a close call,
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but the break -off group have successfully rejoined the herd.
17:45
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
With their goal so close,
17:47
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the pregnant caribou are even prepared to leave behind their yearlings
17:51
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
to get there on time.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Like
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
their mothers, the yearlings are close to collapse.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
If this one can't find the energy to keep going,
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
its chances are poor.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
On
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
its own, it will quickly be taken by predators.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Well
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
over 5 ,000 caribou die during each spring migration,
18:31
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
either from sheer exhaustion or predation.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The only way to
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
avoid that fate is to get up and move on.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
lead caribou finally head out of the mountains and onto the
19:18
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
coastal plains.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
After over 300 miles and barely any food,
19:48
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they've timed this migration to perfection.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The cotton grass sprouts and flowers in the two
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
weeks after the snow has melted.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's now at its most nutritious.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The thousands of caribou now moving onto the plains are replenishing
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
their reserves.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
And it's not just a case of simple refueling.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Scientists have shown that eating the grass at this
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
specific time helps the mothers to produce a richer milk for
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
their newborn calves,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
greatly improving their chances of survival.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
This year's decision to remain
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
on the plains for longer than usual may have something to do with the fact that
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
this is an El Nino year.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
An oceanic event linked to the Pacific thousands of miles away,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
El Niño has wide -ranging atmospheric effects,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
and this includes delaying the rains in Africa.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Perhaps the majority of zebra have responded
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
to the lack of heavy rains by playing it safe in Chobe.
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S… Speaker 3 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
if the zebra want to give their foals the best possible start in life,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they'll have to set off for Naipan soon.
21:21
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Of all the collared zebra,
21:23
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
only Sox and her family are still moving south.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
So who's made the right decision?
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Sox is now 100 kilometers ahead of the
21:33
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
others. She's picked up her pace to 8 kilometers per hour and is traveling
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in a straight line to Naipan.
21:39
S… Speaker 3 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
How
21:46
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
does she know where to go?
21:47
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Incredibly,
21:50
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in the flat,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
featureless wilderness of Botswana,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
zebra navigate perfectly with no hills or landmarks for reference.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Scientists still don't understand exactly how they do this.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Until very recently,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
it was assumed these roots were learned and then passed down generation
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
to generation.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But something happened in northern Botswana that turned this theory
22:18
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
on its head.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
In the 1950s and 60s,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
extensive livestock fences were erected across the landscape
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in an attempt to stop diseases being transmitted from wildlife to
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
domestic cattle.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But the fences also prevented the annual movement of thousands
22:37
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
of animals.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Decades passed with several zebra
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
migrations blocked.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Then,
22:45
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
a few years ago,
22:46
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the fences were removed.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
And these migrations started up once more,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
with the zebra using the exact same roots as in the past.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Despite the fact that no living zebra had ever made
22:59
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
that journey before.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
This behaviour simply couldn't have been learned.
23:06
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
So how did they know where to go?
23:09
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's an extraordinary mystery and the subject
23:13
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
of some of the most recent animal behaviour research.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Scientists now believe that one aspect of the knowledge of
23:20
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
this route has been preserved in the genes of the zebra,
23:24
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
something previously thought impossible.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Elephants can respond to rain falling as far
23:30
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
as 280 kilometres away.
23:35
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's not yet certain how they do this,
23:37
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but it's thought they might be able to detect the low frequency sounds
23:41
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
of the distant storms.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Although
23:47
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
zebra can't hear at such low frequencies as elephants,
23:50
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
perhaps they've evolved their own way of detecting distant storms,
23:54
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
timing their migration to coincide with rains that fall 250
23:58
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
kilometers away in Naipan.
24:00
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But for now,
24:03
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the chobie zebra are still staying put.
24:07
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
There have been a few local showers,
24:09
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but something is stopping them from continuing their journey.
24:12
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The data
24:17
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
from their collards show that they feed on the nutrient -rich grass in the
24:21
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
burnt, wooded area during the day,
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
and then travel back to the safety of the open plains at night.
24:27
S… Speaker 3 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
So
24:32
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
why has Socks not done the same?
24:34
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Has she misread the cues?
24:36
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Or did another as yet undiscovered factor spur her on?
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's becoming clear that the zebra's decision -making process is far
24:46
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
more complex than first thought.
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S… Speaker 3 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
A
24:52
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
chance to check on socks comes at one of the fire breaks.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Swathes cut in the forest to stop fires spreading over large...
25:00
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
areas.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The caller data shows that Sox is due to cross one at
25:04
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
any moment.
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S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It should give the team a chance to assess her condition and,
25:08
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
crucially, to see whether she's had her foal.
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S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
25:21
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
team only get a glimpse of Sox,
25:23
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but it's enough.
25:24
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
90
25:29
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
kilometers from her destination,
25:30
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they can confirm that she's alive and well and yet to give birth,
25:34
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
information the satellite data alone could never provide.
25:38
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But it's also clear
25:42
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
that there are only three zebra.
25:44
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Where is the rest of the family,
25:46
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
and in particular,
25:47
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the stallion?
25:48
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Without his protection,
25:52
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
these three are in even more danger of predation.
25:55
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Soon,
26:05
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
after losing sight of Sox in the dense forest,
26:08
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
her collar suddenly stops sending GPS location updates.
26:12
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Without this essential data,
26:15
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
there is little chance of finding Sox in this vast wilderness.
26:19
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Her last known position is 40 kilometers
26:23
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
from Naipan.
26:30
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The morning after the heavy rains,
26:32
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the zebra start to arrive.
26:34
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Janet's family is the first to be seen by the
26:39
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
team. She
26:43
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
was the first zebra ever recorded to make this migration,
26:46
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
and once again,
26:48
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
she's arrived just in time to enjoy the tender new grass shoots.
26:52
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
In
26:56
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Chobe, Janet was part of a large family group of 15,
27:00
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but now there seems to be only five.
27:06
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Hopefully, the rest of her herd haven't succumbed to exhaustion or predation.
27:10
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Soon,
27:18
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
all the other families are pouring into the park.
27:21
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
27:31
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
next collared female to arrive is Spirit.
27:33
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
She
27:39
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
was pregnant when she set off with the others.
27:41
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
We'll
27:46
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
never know what happened to that foal,
27:48
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but it looks like her family have had a close call with predators.
27:52
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Fresh wounds on three
27:56
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
of the zebra in this group are the unmistakable marks left by lions.
28:01
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
and one young foe looks to have had a very narrow escape.
28:05
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Following
28:19
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the failure of Soxa's GPS collar,
28:21
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
the team doesn't know if she's made it to Naipan or not.
28:24
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But although the GPS part of her collar is no longer working,
28:28
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
it may still be transmitting a VHF radio signal.
28:32
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
On the ground,
28:35
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
its range is just a few kilometers,
28:37
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
but from the air,
28:38
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
it's more like 40,
28:40
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
which gives the team a chance to check if she's here
28:44
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in Naipan.
28:47
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Even so,
28:48
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in an area of 15 ,000 square kilometers,
28:51
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
it's like looking for a needle in a haystack.
28:54
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Eventually,
29:03
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they do pick up a faint signal.
29:05
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
It's Sox.
29:07
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
After
29:12
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
flying in a search pattern,
29:13
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
they home in on her exact location.
29:16
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Sox
29:25
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
has made it.
29:26
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
The
29:32
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
last time she was spotted,
29:34
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
she was traveling with just two other zebra.
29:36
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Now
29:41
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
she's in a group of ten.
29:46
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Socks appears to be in good condition and she's
29:55
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
in the company of a stallion.
29:57
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
But there is no sign of her having a foal.
30:00
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Then something moves in the long grass.
30:04
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Her
30:14
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
new foal is so small it must have been born in the last day
30:18
S… Speaker 1 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
or two.
30:18
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
Just in time for Socks to feed on the nutritious new grass and
30:23
S… Speaker 2 (Surviving Nature's Greatest Migrations - Elephants, Caribou & Zebras - BBC Earth)
provide it with the best possible milk.

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