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(dramatic music)
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The Masai Mara.
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One of Africa's most iconic landscapes.
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A vast of sea of grass within Kenya's Great Rift Valley.
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And home to one of the greatest wildlife spectacles
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on earth.
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The great migrations.
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(elephant vocalizations)
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The rich grasslands attract vast herds of grazes.
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And they also attract some of Africa's largest predators.
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(building dramatic music)
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The lion.
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The strongest and most powerful of all.
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And the cheetah.
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The fastest and most agile hunter on the Savanna.
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But the most successful hunter of them all
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is too often overlooked.
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The hyena.
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Hyenas have a reputation as cowardly theives
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and scavengers.
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But in fact, they are highly intelligent
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and efficient predators.
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Working together as a pack,
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they can bring down animals many times their size.
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In a team, they are arguably the most successful
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predator of all.
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Dry season in the Masai Mara.
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It's a difficult time for the hyenas.
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Prey is scarce on the ground
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and their young cubs need food.
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There has been no rain for over three months.
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And only the heartiest will survive.
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(slow dramatic music)
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Hyenas usually hunt in packs.
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And if they do not find food,
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the whole clan goes hungry.
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This time, they're lucky.
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They found a carcass of a hippo.
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Ample food for the entire pack.
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Their powerful teeth and jaws can tear the toughest skin
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and crush bones to get to the nutritious marrow.
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They will consume every part of the carcass.
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A lion has brought down a wild boar.
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It's a meager meal, but the large herds of zebra
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and wilderbeast will not arrive until after the rains.
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The fresh kill is eyed enviously by others.
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A hyena takes the opportunity
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to make off with a piece of the bounty.
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In fact, more often
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it's lions who steal prey from hyenas.
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But this time, the big cats have to watch their backs.
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(hyena vocalizations)
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The lions have had their fill,
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and now the hyena pack can finish off the rest.
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There's a change in the air.
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(dramatic music building tempo)
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Rain clouds gather above the Masai Mara.
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The parched land and its inhabitants have been waiting
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for this moment.
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Overnight, the life giving waters will transform
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the African Savanna.
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(birds chirping)
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Biologist Kay Holycamp from Michigan State University
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has been studying spotted hyenas in the Masai Mara
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for over 20 years.
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Today, she's on a mission to sedate one of them
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with a tranquilizer dart in order to measure and examine it.
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If Tracy's actually able to get a shot, do not move.
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Do not turn your camera.
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Do not make a sound.
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Do not to anything, just everybody has to freeze, okay,
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so get the camera where you want it to be
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'cause if she hits it, then we can't scare it.
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Kay's student, Tracy, has been helping her
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for nearly a year now and is proficient
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with the tranquilizer gun.
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Nevertheless, she is nervous.
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It's crucial the animals don't realize the dart
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was shot from the scientists car.
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If they do, they'll no longer trust the approach
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of the vehicle and the entire project will be in danger.
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It usually takes around 10 minutes
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for the tranquilizer to take effect,
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but hyenas are tough,
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and this animal will not go down easily.
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After 20 minutes,
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the young female finally collapses on the ground.
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Tracy places a cloth over the hyena's eyes
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to shield it from the sun.
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And Kay take a blood sample for testing in the lab.
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(scientists whispering)
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They measure the animal's teeth to check its general
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health and growth.
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Then Kay carefully removes the dart.
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16.5.
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Hyenas scent mark their territories
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with an oily secretion from their anal gland.
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A sample is taken for further analysis.
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And finally the young female is weighed.
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Okay, (mumbles).
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Kay and her team load the sedated hyena
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onto the jeep to take it to a safe spot.
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She wouldn't survive for long out here in the open.
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Temperatures on the plains rise to over 40 degrees in
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the midday sun.
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And the sedated animal would be an easy target
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for other hungry predators.
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Kay knows the Masai Mara like the back of her hand,
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and has found a shady place to release the young hyena.
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They place her under the bushes and cool her down
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with water.
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(mumbles)
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Then the hiding place is camouflaged
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with twigs and branches.
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The young hyena is starting to wake up.
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She will not remember anything of what has happened.
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Or so, the biologists hope.
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(car engine starts up)
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Kay Holycamp spends two to three months every year
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in the Masai Mara.
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She has tagged a few hyenas from one particular group
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with radio transmitters and has called them the Talek Clan
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after a nearby river.
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Each morning, she and her team set off at dawn
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to track down and follow the family.
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She's fat.
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Yeah.
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The researchers have given every animal
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a name.
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We might have to check the other side.
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There is a Reagan and an Obama.
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And each one has its own unique pattern of spots
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like a fingerprint.
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So she has this really horizontal line across her side,
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and then a wishbone shape there.
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We've got the adult female still walking to the south.
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Southeast maybe.
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About 20 meters away is Jeeves,
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and about 60 meters away is Puma.
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All walking the same direction.
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Yeah, sometimes the youngsters use the adults.
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The main focus of Kay's research
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is to unravel the complex social system of spotted hyenas.
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The scientists follow the animals for up to five hours
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each day.
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And record every movement and interaction.
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Back in camp, all the data is put onto the computer
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and painstakingly analyzed.
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The camp is on the northern edge
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of the Masai Mara National Park.
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Deep inside the African bush.
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It's an unlikely place for modern day techniques,
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but in their makeshift lab,
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the team somehow manage to analyze the samples
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they collect.
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With patience and dedication,
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the team have gathered vast amounts of data
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and gained a unique insight into the lives
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of spotted hyenas.
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Their research have revealed that the animals reputation
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as mean and dimwitted scavenger
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is far from the truth.
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Behind the seemingly ugly exterior,
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lies a highly intelligent and complex creature.
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I think it's become clear that hyenas
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are much more interesting and complex animals
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than anyone had previously assumed.
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They had a very bad reputation
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up until the 1990s, I think, in terms of being
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sculking carrion-eaters that would steal food from the
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real hunters, quote on quote.
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Like cheetahs and lions and leopards.
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But in fact, we now know these animals are extraordinarily
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good hunters.
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They kill animals that are three or four times
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their body mass on their own.
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We know that they live in a primate-like society.
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And they recognize one another
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and they remember their social interactions,
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and they can solve social problems
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that, as far as we know,
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only primates have been shown to be able to solve
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in the past.
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Spotted hyenas live in large clans of up to
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80 individuals.
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It's a matriarchal society
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with females out ranking the males.
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(hyena vocalizations)
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Hyena mothers suckle their cubs for nearly 18 months.
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It's an unusually long time,
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but probably a necessity as most kills are made
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far from the den.
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Not until they're four years old,
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can the young hyenas hunt for themselves.
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(soft classical music)
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The Masai Mara is remarkable for its great concentration
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of large grazes.
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Over two million buffalo, zebra,
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wilderbeast, and antelope feed on the endless seas
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of grass.
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It's a rich supply of food for predators
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and hyenas thrive here.
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They will tackle almost any kind of prey.
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One of the reasons for their success.
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Zebras have a fiery temperament
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and sharp hooves.
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And it can take a team of 10 to 20 hyenas to bring one down.
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They way hyenas hunt is actually very different
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from any of the other animals here in terms of
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how they hunt.
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The hyenas actually will be wandering across the plain,
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come across a group of potential prey,
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rush it, and then send them into a flurry of flight
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and confusion and then the hyena somehow
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can actually pick out a vulnerable individual.
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Those tend to be either animals that are quite elderly
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that have some sort of physical problem like a limp
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or sometimes very pregnant females who are carrying
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a heavy fetus and have a hard time running quickly.
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The topi, a large Savanna antelope
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is a favorite prey of spotted hyenas.
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It's breeding season, and the males have gathered
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to fight for mating rites.
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The strongest will have their pick of the females.
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The losers will go without.
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(Topi vocalizations)
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(birds chirping)
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It's hard work during the midday heat,
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and the animals take a rest from their exertions.
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But down on the ground,
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they may not see approaching danger.
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(upbeat music)
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The hyenas are taking a cooling mud bath.
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It's pleasant in the sweltering heat,
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and it rids the fur of parasites.
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It may also help to cool down before embarking on a hunt.
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Hyenas usually hunt under cover of darkness.
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But this female just emerged from her bath
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has other plans.
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Kay has noticed that some animals will hunt Topi
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during the day, particularly in the rainy season
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when the antelopes congregate to mate.
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The hyena strolls by with a casual careless gait.
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Apparently showing no interest in the Topi
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until the last minute.
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No luck this time.
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(ominous music)
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A close shave for the Topi.
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It has escaped with just a small wound.
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On their own, hyenas have a much smaller chance
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of making a kill.
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Only one in five of all attempts is successful.
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Yet when it comes to hunting Topi,
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Kay Holycamp believes that alone they may stand
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a better chance.
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My observation of it suggest that it's usually
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an individual affair and
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this is one of those times where they prefer
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not to hunt in groups.
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They're usually tip-toeing very quietly among the dozing
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Topis individually,
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and that's a case where if they can actually
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take a Topi by surprise, they may be able to just grab it.
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Lake Nakuru,
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one of the Rift Valley's many soda lakes.
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150 kilometers northeast of the Masai Mara.
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It attracts millions of flamingos
268
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that feed on the abundance of algae in its waters.
269
00:19:04,350 --> 00:19:06,995
The lake lies within a national park
270
00:19:06,995 --> 00:19:09,555
and is a haven for water birds.
271
00:19:09,555 --> 00:19:14,555
(bird vocalizations)
272
00:19:21,076 --> 00:19:24,745
Hyenas also live on the shores of the lake.
273
00:19:24,745 --> 00:19:27,998
The females with cub spend most of the day playing
274
00:19:27,998 --> 00:19:30,643
and lounging on the sandy beach.
275
00:19:30,643 --> 00:19:35,643
(bird vocalizations)
276
00:19:40,328 --> 00:19:44,669
But these hyenas have a rather unusual diet.
277
00:19:44,669 --> 00:19:47,169
They hunt flamingos on the lake.
278
00:19:49,799 --> 00:19:54,194
It's a remarkable scene and even Kay has never seen hyenas
279
00:19:54,194 --> 00:19:56,671
go for this kind of prey before.
280
00:19:57,884 --> 00:19:59,344
Love that swimming.
281
00:19:59,344 --> 00:20:01,887
You don't get to see them swim here often enough.
282
00:20:02,661 --> 00:20:05,498
The biologists are excited to witness a hunt
283
00:20:05,498 --> 00:20:06,885
in the water.
284
00:20:08,164 --> 00:20:09,422
(mumbles)
285
00:20:09,422 --> 00:20:10,628
I know. That's really cute.
286
00:20:10,628 --> 00:20:13,710
But Kay is not overly surprised.
287
00:20:13,710 --> 00:20:17,198
It's just more evidence of the hyenas adaptability.
288
00:20:17,198 --> 00:20:19,907
Yeah, I wouldn't be surprised at all if you had
289
00:20:19,907 --> 00:20:21,774
hyenas that lived around these Rift Valley lakes
290
00:20:21,774 --> 00:20:23,790
that were actually
291
00:20:23,790 --> 00:20:26,111
flamingo specialists,
292
00:20:26,111 --> 00:20:28,269
'cause it's such an abundant food source when the
293
00:20:28,269 --> 00:20:29,965
flamingos are present, so
294
00:20:29,965 --> 00:20:34,264
I think it would be totally expected for them to actually be
295
00:20:34,264 --> 00:20:36,803
specializing on flamingos.
296
00:20:36,803 --> 00:20:38,381
They're clearly pretty good at it,
297
00:20:38,381 --> 00:20:40,346
so (mumbles) trouble at all.
298
00:20:40,346 --> 00:20:43,365
(flamingo vocalizations)
299
00:20:43,365 --> 00:20:48,365
(dramatic music)
300
00:20:50,479 --> 00:20:52,217
Back in the Masai Mara,
301
00:20:52,217 --> 00:20:55,268
its a greater struggle for survival.
302
00:20:55,268 --> 00:20:58,286
Here, the hyenas have to face competition from other
303
00:20:58,286 --> 00:20:59,838
big predators.
304
00:21:02,510 --> 00:21:06,414
The cheetah is the fastest hunter on the open plains
305
00:21:06,414 --> 00:21:10,034
reaching speeds of over 100 kilometers an hour.
306
00:21:14,381 --> 00:21:18,563
This athletic cat can outrun any predator
307
00:21:18,563 --> 00:21:20,061
or prey.
308
00:21:28,567 --> 00:21:30,423
These three cheetah brothers
309
00:21:30,423 --> 00:21:33,894
hunt as a team and they share their spoils.
310
00:21:35,297 --> 00:21:38,192
They are unaware that they're being watched.
311
00:21:39,542 --> 00:21:44,542
(dramatic music)
312
00:22:02,581 --> 00:22:06,180
The hyena has robbed the cheetahs of their bounty.
313
00:22:10,441 --> 00:22:12,713
But that's not all.
314
00:22:12,713 --> 00:22:14,900
The rest of the clan have arrived
315
00:22:14,900 --> 00:22:17,430
and they look like they mean business.
316
00:22:18,432 --> 00:22:23,432
(hyena vocalizations)
317
00:22:28,501 --> 00:22:30,804
The pack have driven one of the brothers
318
00:22:30,804 --> 00:22:32,217
up a tree.
319
00:22:34,707 --> 00:22:37,736
Cheetahs are not good climbers.
320
00:22:37,736 --> 00:22:40,616
But the young male has little choice.
321
00:22:40,616 --> 00:22:44,791
He is no match for the powerful and aggressive hyenas.
322
00:22:47,212 --> 00:22:50,070
His brothers can do little, but watch anxiously
323
00:22:50,070 --> 00:22:51,963
from a safe distance.
324
00:22:52,826 --> 00:22:56,729
It's not until nightfall that the hyenas finally move on.
325
00:22:56,729 --> 00:23:01,729
(birds chirping)
326
00:23:06,051 --> 00:23:10,626
Another hippo has fallen victim to two male lions.
327
00:23:10,626 --> 00:23:14,786
One and a half tons of fresh meat out on the grassland
328
00:23:14,786 --> 00:23:18,673
are a major attraction for other predators and scavengers.
329
00:23:22,658 --> 00:23:25,559
The lions can't consume a carcass this size
330
00:23:25,559 --> 00:23:28,236
in one sitting, so they will feed on it
331
00:23:28,236 --> 00:23:30,459
for the next few days.
332
00:23:35,404 --> 00:23:39,307
For now, the hyenas keep a respectful distance
333
00:23:39,307 --> 00:23:42,026
as do other interested parties.
334
00:23:42,026 --> 00:23:43,466
A jackyl
335
00:23:43,466 --> 00:23:45,465
and a flock of vultures.
336
00:23:49,578 --> 00:23:54,425
Challenging two adult lions could prove to be fatal.
337
00:23:57,097 --> 00:23:59,401
The hyenas wait for the lions to withdraw
338
00:23:59,401 --> 00:24:01,076
for an afternoon nap.
339
00:24:01,076 --> 00:24:03,789
Then, they take their chance.
340
00:24:10,075 --> 00:24:13,152
But this will be a short-lived feast.
341
00:24:14,833 --> 00:24:19,833
(ominous music)
342
00:24:30,176 --> 00:24:31,851
They were lucky.
343
00:24:31,851 --> 00:24:34,870
The lion's pursuit was half hearted.
344
00:24:34,870 --> 00:24:39,870
With a full belly, defending his prize is quite an effort.
345
00:24:40,843 --> 00:24:44,313
Now the vultures seize the opportunity too.
346
00:24:49,983 --> 00:24:54,601
Like vultures, hyenas can eat and digest almost anything.
347
00:24:54,601 --> 00:24:57,235
Meat, bones, and (mumbles).
348
00:24:57,235 --> 00:24:59,883
They are both hunter and scavenger,
349
00:24:59,883 --> 00:25:02,106
taking whatever is on offer.
350
00:25:11,487 --> 00:25:16,138
The lion decides to defend his kill after all.
351
00:25:16,138 --> 00:25:19,588
And the lion is not giving up so easily.
352
00:25:26,559 --> 00:25:30,249
A close encounter for the hyena.
353
00:25:30,249 --> 00:25:33,737
Lions do not usually tolerate such competition
354
00:25:33,737 --> 00:25:36,798
and frequently kill their rivals.
355
00:25:36,798 --> 00:25:39,817
Over half of all hyena deaths are from interactions
356
00:25:39,817 --> 00:25:44,130
with lions, usually at kills such as this.
357
00:25:46,291 --> 00:25:48,456
The relationship between hyenas and lions
358
00:25:48,456 --> 00:25:50,195
generally not very good.
359
00:25:50,195 --> 00:25:54,216
It's uneasy as best and downright murderous at worst.
360
00:25:54,216 --> 00:25:57,234
For the most part, these animals are relying on exactly
361
00:25:57,234 --> 00:25:59,954
the same resource base.
362
00:25:59,954 --> 00:26:03,004
Hyenas and lions feed on the same size and same
363
00:26:03,004 --> 00:26:07,271
diversity of antelope, and yet the lions are.
364
00:26:07,271 --> 00:26:09,415
Well, a lion (mumbles) four times the size
365
00:26:09,415 --> 00:26:12,348
of an adult hyena and
366
00:26:12,348 --> 00:26:15,942
a single adult male lion can actually
367
00:26:15,942 --> 00:26:18,603
kill a hyena with just a swat of its paw.
368
00:26:20,123 --> 00:26:22,299
Every evening, the research team
369
00:26:22,299 --> 00:26:26,502
check on the hyena den by the Talek River.
370
00:26:26,502 --> 00:26:28,870
The communal den houses all the youngsters
371
00:26:28,870 --> 00:26:31,387
from the clan of varying ages
372
00:26:31,387 --> 00:26:33,418
and from different mothers.
373
00:26:38,128 --> 00:26:41,658
So at 18:08 we arrive at riverbed den.
374
00:26:41,658 --> 00:26:44,121
We have one cub sacked out and one cub stand look
375
00:26:44,121 --> 00:26:46,019
about 15 meters from the den.
376
00:26:46,019 --> 00:26:49,017
And one, two, three, four cubs
377
00:26:49,017 --> 00:26:53,880
(mumbles) about eight meters from the den.
378
00:26:53,880 --> 00:26:56,322
(hyena vocalizations)
379
00:26:56,322 --> 00:26:59,479
The den is the center of clan activity.
380
00:26:59,479 --> 00:27:03,991
It's here where friendships and alliances are forged.
381
00:27:03,991 --> 00:27:07,404
The younger cubs are still safely below ground,
382
00:27:07,404 --> 00:27:09,698
but the older ones are already busy
383
00:27:09,698 --> 00:27:11,920
exploring their surroundings.
384
00:27:13,900 --> 00:27:16,139
So the communal den hole is just right ahead
385
00:27:16,139 --> 00:27:16,897
of the vehicle there.
386
00:27:16,897 --> 00:27:20,949
You can see three cubs sacked out in front of the den hole,
387
00:27:20,949 --> 00:27:25,034
and this is actually a big aardvark
388
00:27:25,034 --> 00:27:27,423
den complex that the hyenas have modified a bit,
389
00:27:27,423 --> 00:27:29,727
and they're using this den hole as well as
390
00:27:29,727 --> 00:27:32,490
a couple of others off to the sides.
391
00:27:32,490 --> 00:27:35,412
And the cubs move among them fairly freely
392
00:27:35,412 --> 00:27:38,346
'cause they're old enough to do that without danger.
393
00:27:38,346 --> 00:27:40,596
They're pretty well able to run out of trouble
394
00:27:40,596 --> 00:27:41,695
if they get into it,
395
00:27:41,695 --> 00:27:44,180
and at this particular den right now,
396
00:27:44,180 --> 00:27:46,174
we have 15 cubs ranging in age
397
00:27:46,174 --> 00:27:51,174
from about 2 months to
398
00:27:51,239 --> 00:27:53,568
almost nine months, actually.
399
00:27:56,497 --> 00:27:58,288
The young hyenas are looked after
400
00:27:58,288 --> 00:28:00,091
not just by their mothers,
401
00:28:00,091 --> 00:28:03,696
but also by older siblings, aunts, and other females
402
00:28:03,696 --> 00:28:05,055
in the clan.
403
00:28:08,112 --> 00:28:12,890
Teamwork and co-operation are key to the hyena success.
404
00:28:13,776 --> 00:28:16,239
These hunters have got their eye on the kill
405
00:28:16,239 --> 00:28:18,089
of a female lion.
406
00:28:18,951 --> 00:28:21,831
It's a risky operation and their only chance
407
00:28:21,831 --> 00:28:23,841
is to work as a team.
408
00:28:24,764 --> 00:28:27,499
The pack attack with lightning speed.
409
00:28:28,156 --> 00:28:30,933
The lioness knows she is outnumbered.
410
00:28:32,774 --> 00:28:35,867
It takes at least four hyenas to drive a lioness
411
00:28:35,867 --> 00:28:37,616
from her kill.
412
00:28:37,616 --> 00:28:39,631
Against an adult male,
413
00:28:39,631 --> 00:28:41,812
they would stand little chance.
414
00:29:02,602 --> 00:29:05,425
As night falls on the Talek River,
415
00:29:05,425 --> 00:29:08,469
the scientists get ready for the late shift.
416
00:29:09,617 --> 00:29:11,846
Hyenas are mainly noctural
417
00:29:11,846 --> 00:29:14,161
and as more and more animals emerge,
418
00:29:14,161 --> 00:29:17,413
the activity activity around the den increases.
419
00:29:18,325 --> 00:29:20,160
With the help of spotlights,
420
00:29:20,160 --> 00:29:23,168
the team observe and record the interactions between
421
00:29:23,168 --> 00:29:24,953
clan members.
422
00:29:26,954 --> 00:29:31,370
Endor, who is the subordinate twin to Alderon
423
00:29:31,370 --> 00:29:34,958
is also wondering 15 meters from the den.
424
00:29:37,919 --> 00:29:40,511
Hyena societies are complex
425
00:29:40,511 --> 00:29:42,718
and it's all about who you know
426
00:29:42,718 --> 00:29:44,606
and who is your ally.
427
00:29:44,606 --> 00:29:48,216
It's a lesson the young cubs have to learn quickly.
428
00:29:50,526 --> 00:29:51,272
(mumbles)
429
00:29:51,272 --> 00:29:53,661
The clan are used to the research vehicle
430
00:29:53,661 --> 00:29:56,647
and take little notice of its inhabitants.
431
00:29:56,647 --> 00:29:58,172
Indeed something else
432
00:29:58,172 --> 00:30:00,640
seems to have attracted their attention.
433
00:30:04,614 --> 00:30:07,121
The recent rains have triggered the emergence
434
00:30:07,121 --> 00:30:08,847
of termites.
435
00:30:08,847 --> 00:30:12,569
It's a natural midnight snack for the hyenas,
436
00:30:12,569 --> 00:30:16,164
but the young cubs seem slightly disconcerted.
437
00:30:16,164 --> 00:30:18,003
(laughter)
438
00:30:19,054 --> 00:30:21,165
Yeah, it's great watching them eat the termites.
439
00:30:24,184 --> 00:30:27,991
It's not easy the first time you try it.
440
00:30:27,991 --> 00:30:31,863
And it takes some practice catching the flying prey.
441
00:30:31,863 --> 00:30:36,863
(laughter)
442
00:30:40,267 --> 00:30:42,432
Spotted hyenas are born apparently
443
00:30:42,432 --> 00:30:45,451
ready for action with a sharp set of teeth
444
00:30:45,451 --> 00:30:47,322
and wide open eyes.
445
00:30:47,979 --> 00:30:50,901
Nonetheless, these youngsters are no where near ready
446
00:30:50,901 --> 00:30:53,803
to hunt and will catch little more than a mouthful
447
00:30:53,803 --> 00:30:56,163
of termites in the coming year.
448
00:31:01,513 --> 00:31:04,969
Hyena mothers care for their cubs for up to four years.
449
00:31:04,969 --> 00:31:07,710
Much longer than most predators.
450
00:31:07,710 --> 00:31:09,186
Why is this so?
451
00:31:10,792 --> 00:31:13,074
Maybe a complex social system
452
00:31:13,074 --> 00:31:15,986
requires a longer period of learning.
453
00:31:15,986 --> 00:31:19,623
Or maybe their bone crushing jaws take several years
454
00:31:19,623 --> 00:31:21,260
to mature.
455
00:31:21,260 --> 00:31:23,211
One thing is certain,
456
00:31:23,211 --> 00:31:25,899
not until they're three to four years old,
457
00:31:25,899 --> 00:31:29,658
can young hyenas hunt and crack open bones.
458
00:31:31,435 --> 00:31:33,728
Kay believes that this could be the reason
459
00:31:33,728 --> 00:31:36,427
for their matriarchal society.
460
00:31:36,427 --> 00:31:38,816
Maybe females evolve to be dominant
461
00:31:38,816 --> 00:31:43,039
and more aggresive to protect and feed their cubs.
462
00:31:43,039 --> 00:31:44,852
So, we're leaving at 7:48.
463
00:31:44,852 --> 00:31:48,105
The team decide to head back to camp.
464
00:31:48,105 --> 00:31:51,081
In just a few hours, they'll be setting off once more
465
00:31:51,081 --> 00:31:53,982
to rejoin the hyenas at dawn.
466
00:31:53,982 --> 00:31:58,982
(pleasant classical music)
467
00:32:25,516 --> 00:32:27,543
In the early hours of the morning,
468
00:32:27,543 --> 00:32:30,619
mothers and cubs share intimate moments.
469
00:32:34,237 --> 00:32:37,298
And the indigestible remains of the evening meal
470
00:32:37,298 --> 00:32:39,965
are disposed of as small pellets.
471
00:32:41,983 --> 00:32:44,795
(hyena calls)
472
00:32:48,552 --> 00:32:51,453
The pellets have a pungent smell.
473
00:32:51,453 --> 00:32:54,999
And mother and sun roll in it to take on the scent.
474
00:32:55,635 --> 00:32:58,882
It seems to impress the other members of the clan.
475
00:33:00,921 --> 00:33:03,806
(hyena vocalizations)
476
00:33:03,806 --> 00:33:07,358
And social rank in the clan affects every aspect
477
00:33:07,358 --> 00:33:08,973
of hyena life.
478
00:33:09,598 --> 00:33:13,421
Cubs fight from birth for their place in the hierarchy.
479
00:33:18,440 --> 00:33:21,245
The status quo is regularly challenged.
480
00:33:21,245 --> 00:33:24,733
Pecking orders constantly change.
481
00:33:24,733 --> 00:33:27,261
Whatever may have caused this argument,
482
00:33:27,261 --> 00:33:30,141
it's all about power and status,
483
00:33:30,141 --> 00:33:32,509
and shifting alliances.
484
00:33:32,509 --> 00:33:36,486
(hyena vocalizations)
485
00:33:36,486 --> 00:33:38,481
It's a noisy affair.
486
00:33:38,481 --> 00:33:40,689
A complex social arrangement requires
487
00:33:40,689 --> 00:33:42,609
a complex language.
488
00:33:42,609 --> 00:33:45,883
And the huge variety of whoops, grunts, and giggles
489
00:33:45,883 --> 00:33:48,187
communicates their intentions.
490
00:33:48,187 --> 00:33:53,187
(hyena vocalizations)
491
00:34:04,559 --> 00:34:06,782
The power struggle is over.
492
00:34:07,428 --> 00:34:09,679
Having re-established their positions,
493
00:34:09,679 --> 00:34:12,254
the rivals bury the hatchet.
494
00:34:13,327 --> 00:34:17,544
At the end of the day, their survival depends on teamwork.
495
00:34:19,342 --> 00:34:23,033
Kay has learned the method behind the bickering.
496
00:34:23,033 --> 00:34:25,283
Yeah, I think if you actually look closely
497
00:34:25,283 --> 00:34:28,110
at the decisions that individual hyenas make about,
498
00:34:28,110 --> 00:34:30,947
for example, whether or not to help another animal
499
00:34:30,947 --> 00:34:32,664
when it needs helps.
500
00:34:32,664 --> 00:34:34,221
That tells you
501
00:34:34,221 --> 00:34:37,379
what complicated decision making processes
502
00:34:37,379 --> 00:34:39,138
are taking place in their heads.
503
00:34:39,138 --> 00:34:41,656
They're actually taking into consideration
504
00:34:41,656 --> 00:34:45,623
who the potential recipient of their help is.
505
00:34:45,623 --> 00:34:47,501
They're taking into consideration
506
00:34:47,501 --> 00:34:49,218
the other hyenas that are immediately present
507
00:34:49,218 --> 00:34:51,745
in their social environment for fear, perhaps,
508
00:34:51,745 --> 00:34:52,844
if they help this guy,
509
00:34:52,844 --> 00:34:55,798
then that guy will retaliate and bite me.
510
00:34:55,798 --> 00:34:57,313
They're taking into consideration
511
00:34:57,313 --> 00:34:59,510
the local ecological situation.
512
00:34:59,510 --> 00:35:01,440
They behave very differently when there's a lot of food
513
00:35:01,440 --> 00:35:03,040
versus when there's not.
514
00:35:03,040 --> 00:35:05,781
They're actually taking into consideration
515
00:35:05,781 --> 00:35:07,872
a phenomenal number of variables.
516
00:35:07,872 --> 00:35:09,242
It's really surprising.
517
00:35:10,080 --> 00:35:12,053
Hyena cubs have much to learn
518
00:35:12,053 --> 00:35:15,840
aside from social and political etiquette.
519
00:35:15,840 --> 00:35:18,271
This youngster is making his first encounter
520
00:35:18,271 --> 00:35:21,343
with potential prey, but it may still be
521
00:35:21,343 --> 00:35:23,939
slightly out of his league.
522
00:35:28,627 --> 00:35:31,422
His mother looks on anxiously.
523
00:35:31,422 --> 00:35:35,230
The tusks of a wild boar can inflict fatal injuries
524
00:35:35,230 --> 00:35:37,474
even on a fully grown lion.
525
00:35:40,168 --> 00:35:43,027
The youngster will do better to watch the adults
526
00:35:43,027 --> 00:35:45,154
and see how it's done.
527
00:35:49,758 --> 00:35:53,026
An adult female is eyeing up the situation.
528
00:35:58,557 --> 00:36:01,335
She's heading towards a herd of Topi.
529
00:36:03,666 --> 00:36:06,173
Most of the large grazers have seen the predator
530
00:36:06,173 --> 00:36:09,271
approach and are keeping a watchful eye.
531
00:36:13,640 --> 00:36:18,640
(ominous music)
532
00:36:30,112 --> 00:36:33,482
Her short sprints cause them little concern.
533
00:36:33,482 --> 00:36:36,910
They can easily outrun her with their long legs.
534
00:36:49,980 --> 00:36:53,649
But now, the hyena has detected an inattentive animal
535
00:36:53,649 --> 00:36:55,163
in the grass.
536
00:36:55,163 --> 00:36:57,194
This is her chance.
537
00:37:08,083 --> 00:37:11,256
A last minute escape for the Topi.
538
00:37:15,422 --> 00:37:18,835
It can run at speeds of 70 kilometers per hour
539
00:37:18,835 --> 00:37:22,541
and the hyena finally gives up the futile chase.
540
00:37:25,011 --> 00:37:27,912
But with a piece of skin ripped from its flanks,
541
00:37:27,912 --> 00:37:31,239
the antelope is lucky to have got away with its life.
542
00:37:31,239 --> 00:37:36,239
(slow classical music)
543
00:37:40,870 --> 00:37:44,721
Life in the African Savanna has been wooed for millenia
544
00:37:44,721 --> 00:37:47,398
by the cycles of rain and drought,
545
00:37:47,398 --> 00:37:49,941
of predators and prey.
546
00:38:04,601 --> 00:38:08,248
Today, the Masai Mara is a National Park.
547
00:38:08,248 --> 00:38:11,427
A protected island of grassland within a landscape
548
00:38:11,427 --> 00:38:13,629
of fields and villages.
549
00:38:14,605 --> 00:38:18,253
But neither the wildlife nor the Masai nomads
550
00:38:18,253 --> 00:38:21,479
and their cattle have enough space here.
551
00:38:25,357 --> 00:38:28,674
Not surprisingly, the Masai take their livestock
552
00:38:28,674 --> 00:38:30,348
into the protected areas
553
00:38:30,348 --> 00:38:33,025
because there's still enough grass here.
554
00:38:33,025 --> 00:38:35,173
It's a recipe for disaster.
555
00:38:39,595 --> 00:38:41,398
In the early hours of dawn,
556
00:38:41,398 --> 00:38:44,602
the Talek clan attack a herd of cattle.
557
00:38:54,239 --> 00:38:56,863
Kay Holycamp is following the hyenas
558
00:38:56,863 --> 00:38:58,969
and witnesses the event.
559
00:39:03,198 --> 00:39:07,235
The clan try to separate a single animal from the herd.
560
00:39:08,542 --> 00:39:10,877
The Masai herders arrive just in time
561
00:39:10,877 --> 00:39:13,405
to scare off the predators,
562
00:39:13,405 --> 00:39:16,513
but not all encounters end this way.
563
00:39:17,447 --> 00:39:20,657
If the hyenas had killed one of their cattle,
564
00:39:20,657 --> 00:39:23,221
the Masai would have sought revenge.
565
00:39:24,198 --> 00:39:26,619
There has been an enormous change with respect
566
00:39:26,619 --> 00:39:28,059
to livestock in the park.
567
00:39:28,059 --> 00:39:30,704
When we first started working here in the late 1980s,
568
00:39:30,704 --> 00:39:34,512
there was the occasional herd of 20 or 30 cows
569
00:39:34,512 --> 00:39:36,666
tucked very carefully and secretively
570
00:39:36,666 --> 00:39:39,759
down in the riverbed, and now there are tens of thousands
571
00:39:39,759 --> 00:39:41,615
of cows and
572
00:39:41,615 --> 00:39:43,940
tens and thousands of goats and sheep as well
573
00:39:43,940 --> 00:39:46,074
every single day out here on the plain.
574
00:39:46,074 --> 00:39:49,225
It's really tremendously disturbing to see it.
575
00:39:51,535 --> 00:39:53,935
The agricultural fields push right up
576
00:39:53,935 --> 00:39:55,834
to the park boundaries.
577
00:39:55,834 --> 00:39:59,130
And since the reserve was created in the 1960s,
578
00:39:59,130 --> 00:40:01,711
Kenya's population has grown from eight
579
00:40:01,711 --> 00:40:04,030
to over 40 million people.
580
00:40:04,964 --> 00:40:07,865
There are now suggestions to let the Masai into the park
581
00:40:07,865 --> 00:40:09,881
for periods of time.
582
00:40:09,881 --> 00:40:12,755
But whether this will help is not clear.
583
00:40:16,067 --> 00:40:18,094
They think we've started a very
584
00:40:18,094 --> 00:40:21,923
bad cycle in which the local pasturalists
585
00:40:21,923 --> 00:40:23,448
bring their livestock into the park.
586
00:40:23,448 --> 00:40:25,677
That drives the wild antelope away.
587
00:40:25,677 --> 00:40:27,234
The hyenas are left with very little food
588
00:40:27,234 --> 00:40:29,976
other than the livestock to prey upon
589
00:40:29,976 --> 00:40:31,576
and this is not only true for the hyenas,
590
00:40:31,576 --> 00:40:33,719
but also for the other large carnivores in the area.
591
00:40:33,719 --> 00:40:35,639
They either have to move, which is very difficult,
592
00:40:35,639 --> 00:40:37,079
because they all defend territories,
593
00:40:37,079 --> 00:40:39,052
and they can't just go where they want to.
594
00:40:39,052 --> 00:40:41,420
Or, they actually have to find something else to eat,
595
00:40:41,420 --> 00:40:43,276
and if the only thing to eat is livestock,
596
00:40:43,276 --> 00:40:46,508
that's going to cause more and more trouble, I'm afraid.
597
00:40:46,508 --> 00:40:48,343
The hyenas will ultimately lose this battle.
598
00:40:48,343 --> 00:40:50,107
We can be sure of that.
599
00:40:52,289 --> 00:40:55,052
National parks, such as the Masai Mara,
600
00:40:55,052 --> 00:40:58,437
are more than a nature reserve and tourist attraction.
601
00:40:59,211 --> 00:41:03,712
They are the last stronghold of Africa's true wilderness.
602
00:41:03,712 --> 00:41:06,176
If these final frontiers should fall,
603
00:41:06,176 --> 00:41:10,058
then Africa's large predators, including the hyena,
604
00:41:10,058 --> 00:41:12,703
have little chance of survival.
605
00:41:12,703 --> 00:41:17,703
(slow music)
606
00:41:28,194 --> 00:41:30,732
The Talek clan are attempting another attack
607
00:41:30,732 --> 00:41:32,348
on the herd of Topi.
608
00:41:35,074 --> 00:41:38,177
The persistent hunters are not easily discouraged
609
00:41:38,177 --> 00:41:41,600
and appear to have all the time in the world.
610
00:41:41,600 --> 00:41:44,064
They know they will eventually strike lucky
611
00:41:44,064 --> 00:41:47,957
when one of the antelope dozes for a second too long.
612
00:41:47,957 --> 00:41:52,957
(Topi vocalizations)
613
00:42:01,705 --> 00:42:03,929
Nearly, but not quite.
614
00:42:09,435 --> 00:42:12,752
This time, the hunter approaches from behind
615
00:42:12,752 --> 00:42:15,077
in the animal's blindspot.
616
00:42:18,787 --> 00:42:23,787
(ominous music)
617
00:42:32,195 --> 00:42:35,587
Whilst trying to break free, the unfortunate Topi
618
00:42:35,587 --> 00:42:38,381
has broken one of its hind legs.
619
00:42:38,381 --> 00:42:41,393
It's fate is now sealed.
620
00:43:00,417 --> 00:43:02,155
The Topi is down
621
00:43:02,155 --> 00:43:04,640
and reinforcement is on its way.
622
00:43:04,640 --> 00:43:09,640
(hyena vocalizations)
623
00:43:24,162 --> 00:43:26,410
The battle is over.
624
00:43:26,410 --> 00:43:29,332
But now, a different struggle begins.
625
00:43:33,630 --> 00:43:36,815
Dominant clan members get first choice at the kill,
626
00:43:36,815 --> 00:43:39,315
starting with the alpha female.
627
00:43:40,017 --> 00:43:41,959
But in the initial excitement,
628
00:43:41,959 --> 00:43:45,030
the buffet turns into a scrum, as everyone
629
00:43:45,030 --> 00:43:47,232
tries to get a piece of the meal.
630
00:43:49,094 --> 00:43:51,483
The mothers now need to assert their position
631
00:43:51,483 --> 00:43:55,178
at the kill and ensure their older cubs get a share.
632
00:43:56,173 --> 00:43:59,127
Hyenas don't carry food back to the den.
633
00:43:59,127 --> 00:44:00,844
And the growing youngsters need more
634
00:44:00,844 --> 00:44:02,521
than just their mother's milk.
635
00:44:02,521 --> 00:44:06,382
(hyena vocalizations)
636
00:44:06,382 --> 00:44:08,686
News of the feast spreads quickly
637
00:44:08,686 --> 00:44:11,737
and clan members now appear from every direction.
638
00:44:11,737 --> 00:44:16,737
(hyena vocalizations)
639
00:44:24,335 --> 00:44:26,639
The lowest ranking members of the clan
640
00:44:26,639 --> 00:44:30,820
especially the males, wait anxiously on the sidelines,
641
00:44:30,820 --> 00:44:34,941
hoping eventually, to get a turn at the dinner table.
642
00:44:37,891 --> 00:44:42,286
In less than an hour, the Topi has been entirely dismantled
643
00:44:42,286 --> 00:44:44,697
down to the last bone.
644
00:44:44,697 --> 00:44:47,406
It's hard to imagine a more efficient form
645
00:44:47,406 --> 00:44:49,192
of food processing.
646
00:44:51,331 --> 00:44:53,955
It's the uniqueness of hyena societies
647
00:44:53,955 --> 00:44:57,576
that so intrigue scientists like Kay Holycamp.
648
00:44:59,373 --> 00:45:02,755
To me they pose a very interesting biological puzzle.
649
00:45:02,755 --> 00:45:05,688
They actually appear to violate a lot of the basic rules
650
00:45:05,688 --> 00:45:08,216
of mammalian biology and I'm putting rules there
651
00:45:08,216 --> 00:45:10,743
in quotes because the fact that the hyenas appear
652
00:45:10,743 --> 00:45:13,068
to violate those rules suggest that those really
653
00:45:13,068 --> 00:45:15,831
aren't the rules at all, so
654
00:45:15,831 --> 00:45:18,497
what we thought historically makes a male mammal
655
00:45:18,497 --> 00:45:20,545
a male mammal, and a female a female.
656
00:45:20,545 --> 00:45:21,750
The hyenas appear to violate.
657
00:45:21,750 --> 00:45:24,332
The females are very heavily masculinized in some ways,
658
00:45:24,332 --> 00:45:26,070
but not others.
659
00:45:26,070 --> 00:45:29,899
What appears to be a typical mammalian carnivore
660
00:45:29,899 --> 00:45:32,033
social system is completely violated in a hyenas
661
00:45:32,033 --> 00:45:35,339
because they live in societies like baboon societies,
662
00:45:35,339 --> 00:45:37,675
not like lion societies or canid societies,
663
00:45:37,675 --> 00:45:39,008
or mongoose societies.
664
00:45:39,008 --> 00:45:41,579
So they violate these rules and a lot of ways that makes
665
00:45:41,579 --> 00:45:43,941
them a really fascinating puzzle.
666
00:45:45,131 --> 00:45:48,416
But how intelligent are hyenas.
667
00:45:48,416 --> 00:45:50,965
Kay's experiments are revealing that the much maligned
668
00:45:50,965 --> 00:45:54,335
scavengers are, in fact, rather clever.
669
00:45:54,335 --> 00:45:56,996
Maybe as clever as primates.
670
00:45:57,951 --> 00:46:00,596
Marked with a radio collar, Gucci,
671
00:46:00,596 --> 00:46:03,172
is a particularly intelligent female.
672
00:46:13,970 --> 00:46:16,871
This experiment is designed to test the problem
673
00:46:16,871 --> 00:46:20,161
solving skills and the memory of hyenas.
674
00:46:25,094 --> 00:46:28,939
Kay places a steel cage in the grass.
675
00:46:35,291 --> 00:46:38,470
Then she puts a piece of meat inside and the latch
676
00:46:38,470 --> 00:46:40,298
is bolted securely.
677
00:46:41,467 --> 00:46:43,536
The hyenas will smell the meet,
678
00:46:43,536 --> 00:46:45,727
but won't be able to reach it.
679
00:46:46,779 --> 00:46:50,244
The solid latch can't be opened accidentally.
680
00:46:50,244 --> 00:46:53,022
The animal has to know how it works.
681
00:46:55,119 --> 00:46:58,254
Then Kay drives the jeep to a safe distance to observe
682
00:46:58,254 --> 00:46:59,548
what happens.
683
00:47:00,109 --> 00:47:03,676
(mumbles) puzzle box at 8:10.
684
00:47:06,146 --> 00:47:07,404
Within a few minutes,
685
00:47:07,404 --> 00:47:10,118
Gucci approaches the cage.
686
00:47:11,841 --> 00:47:15,588
She learned to solve this problem a few years ago.
687
00:47:15,588 --> 00:47:18,619
Kay is intrigued to see whether she remembers.
688
00:47:25,153 --> 00:47:28,448
Many scientists believe that humans and primates
689
00:47:28,448 --> 00:47:31,488
and maybe also hyenas are more intelligent
690
00:47:31,488 --> 00:47:34,223
because they live in large social groups.
691
00:47:36,224 --> 00:47:38,965
Dealing with the challenges of a complex society
692
00:47:38,965 --> 00:47:43,300
requires social intelligence and the ability to learn.
693
00:47:51,900 --> 00:47:55,110
Gucci clearly knows there is a way into the cage
694
00:47:55,110 --> 00:47:58,027
and that the latch is the key to the solution.
695
00:48:07,269 --> 00:48:08,820
Come on Gucci.
696
00:48:13,028 --> 00:48:16,697
She's got the bolt (mumbles).
697
00:49:02,663 --> 00:49:05,382
Gucci has not only solved the problem,
698
00:49:05,382 --> 00:49:08,694
she's done it considerably quicker than the first time.
699
00:49:09,649 --> 00:49:11,712
It's an extraordinary achievement.
700
00:49:19,238 --> 00:49:22,491
A lion or cheetah would never have succeeded.
701
00:49:22,491 --> 00:49:25,882
But not all hyenas have managed either.
702
00:49:25,882 --> 00:49:29,519
So are they really as clever and resourceful as primates?
703
00:49:29,519 --> 00:49:32,766
Or are there just exceptional individuals?
704
00:49:35,353 --> 00:49:38,297
That's a question scientists have been trying to answer
705
00:49:38,297 --> 00:49:40,462
for years.
706
00:49:40,462 --> 00:49:43,481
Kay is convinced the hyenas have more surprises
707
00:49:43,481 --> 00:49:46,382
in store for her and her team
708
00:49:46,382 --> 00:49:49,091
and she has achieved much already.
709
00:49:49,091 --> 00:49:52,046
Thanks to Kay and others, the hyenas reputation
710
00:49:52,046 --> 00:49:55,597
as a primitive scavenger has been overturned.
711
00:49:55,597 --> 00:49:59,149
We now know them to be surprisingly social animals,
712
00:49:59,149 --> 00:50:01,308
and tender parents.
713
00:50:02,541 --> 00:50:06,839
There may be faster, bigger, and more powerful predators
714
00:50:06,839 --> 00:50:11,735
in the Savanna, but as a team, hyenas are one of Africa's
715
00:50:11,735 --> 00:50:14,871
most successful hunters.
716
00:50:14,871 --> 00:50:19,425
The hyena is truly the queen of the Masai Mara.
717
00:50:19,425 --> 00:50:24,425
(slow music)
54532
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