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Looking down from two miles
above the surface of the Earth,
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00:00:14,395 --> 00:00:20,135
it's impossible not to be impressed
by the sheer grandeur and splendour
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00:00:20,155 --> 00:00:22,475
and power of the natural world.
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00:00:26,075 --> 00:00:29,555
Ten years ago, in a television
series called Planet Earth,
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we revealed many of those wonders.
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00:00:34,875 --> 00:00:39,715
Planet Earth II brings you even
closer to the lives of animals
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00:00:39,755 --> 00:00:40,955
than ever before.
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00:00:45,155 --> 00:00:47,975
With new technology and new insight,
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we can show wildlife dramas
in completely new ways.
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00:01:01,435 --> 00:01:05,635
In this programme, we celebrate some
of the highlights of the series.
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00:01:14,715 --> 00:01:17,355
Journeying to every corner of the globe...
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00:01:21,195 --> 00:01:25,835
..to reveal the extreme lengths
animals go to in order to survive.
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00:01:40,195 --> 00:01:44,915
And we also visit
the newest habitat on Earth -
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our cities.
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00:01:51,675 --> 00:01:55,335
Now is a crucial time for the natural world,
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when our connection with nature
is more important than ever before.
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This is Planet Earth II.
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00:02:42,395 --> 00:02:43,675
The snow leopard.
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00:02:47,875 --> 00:02:52,395
Seldom seen, the detail of their
lives has long been a mystery.
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00:02:57,275 --> 00:03:02,395
But now, at last, helped by the
latest remote camera technology,
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we're getting closer to them
than ever before.
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They are very rare - as few as
four of them in 40 square miles.
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In the high mountains,
there is simply not enough prey
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to sustain them.
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00:03:26,915 --> 00:03:29,555
They live solitary lives.
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00:03:29,595 --> 00:03:32,835
Nonetheless, they are well aware of
the presence and the movements
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00:03:32,875 --> 00:03:34,595
of their neighbours,
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because they leave messages
in a few special places.
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They rub particular rocks
with their cheeks...
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..and then spray them with urine.
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Their two perfumes
create a unique signature.
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Any other leopard can know which
of its neighbours passed this way
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without ever making direct contact.
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00:04:41,675 --> 00:04:46,715
Life at extreme altitudes has
shaped some of the toughest animals
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on the planet.
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00:04:51,795 --> 00:04:55,035
In the Alps, Europe's highest peaks,
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it is winter and food is desperately short.
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A golden eagle has to spend
every daylight hour
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scanning the slopes for something,
somewhere to eat.
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Her seven-foot wingspan allows
her to glide effortlessly
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for 100 miles in a single day.
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00:05:45,835 --> 00:05:50,675
Her extraordinary eyes enable her
to spot prey from two miles away.
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00:06:00,075 --> 00:06:02,675
But she is not the only one
who's looking for food.
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When she spots a chance, she must move fast.
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00:06:13,235 --> 00:06:15,915
She can dive at 200mph -
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only a peregrine is faster.
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00:06:52,115 --> 00:06:56,235
During winter, even eagles rely
almost entirely on carrion.
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It's a dead fox,
and it could sustain her for days.
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Other scavengers must defer.
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00:07:10,475 --> 00:07:12,915
The hungry crows soon regain their courage.
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They'll try any trick to steal a morsel.
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And they are annoyingly persistent.
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But this mob are the least of her worries.
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A bigger eagle takes control.
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But this kill is too important to give up.
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So she must fight.
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For the moment,
she has won the carcass back...
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00:08:35,515 --> 00:08:39,235
..but a kill like this will attract
every eagle for miles around.
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As ever, the strongest
wins the lion's share.
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Unable to defend the carcass any longer,
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the first eagle must now
continue its search.
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It may be many days before she feeds again.
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00:09:27,875 --> 00:09:31,595
Compared to the sparseness
of the highest mountains,
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the jungle is full of opportunity.
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It is Eden.
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It covers less than
6% of the Earth's surface,
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but it's home to half of all
the plants and animals on land.
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The challenge here
is dealing with the competition.
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00:10:06,515 --> 00:10:11,555
And that has driven animals
to do a raft of ingenious things.
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00:10:13,755 --> 00:10:16,595
For some, it is about trying to stand out.
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00:10:21,315 --> 00:10:25,355
While, for others, the key
to survival is blending in.
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And these streams in Costa Rica are
home to one of the most remarkable
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masters of disguise.
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A glass frog.
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A male, and tiny.
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No bigger than your fingernail...
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..and almost entirely transparent.
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As he needs to be.
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Almost everything that
walks past here could eat him.
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Even a cricket.
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His best chance is to stay
absolutely still and trust
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that the cricket looks right through him.
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Danger passed...
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..and that's just as well.
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Because he is a father...
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..and he is guarding
some very precious eggs.
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For the last few weeks, females,
one after the other,
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have visited him and
entrusted him with their offspring.
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Some are now almost ready to hatch.
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00:12:29,715 --> 00:12:33,335
There are several clutches
on the leaf, and those at the top,
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the most recently laid,
are barely a day old.
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00:12:42,835 --> 00:12:46,235
But, in the jungle, there is
always someone out to get you.
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This wasp is a specialist
hunter of frogs' eggs.
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It has noticed the wriggling
tadpoles at the bottom of the leaf.
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He mustn't move.
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The youngest eggs are the most vulnerable,
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and he can't guard them all.
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00:13:36,115 --> 00:13:39,515
But these tadpoles are not
as helpless as they might appear.
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Incredibly, the unhatched tadpoles
can sense danger and the oldest
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and strongest wriggle free
and drop into the stream below.
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The eggs at the top of the leaf, however,
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are still too young to hatch...
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..and now the wasps
know they're there.
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00:14:28,235 --> 00:14:36,235
But the male's back looks very like
the youngest cluster of eggs...
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..and that seems
to confuse the wasps.
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00:15:02,195 --> 00:15:06,515
Using his own body as a decoy
is a huge risk.
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The wasps' stings could kill him.
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He has managed to save most of his young.
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He'll have to remain on guard
for another two weeks.
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But, in the jungle, just surviving
the day can count as a success.
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Jungles are the richest places on Earth,
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because of one remarkable fact.
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They make their own weather.
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Every day, water rises from the
surface of the leaves as vapour.
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00:16:25,795 --> 00:16:28,715
It's as if the trees breathe out clouds.
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They gather over the forest,
until finally...
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..they burst.
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Rain is the lifeblood of every jungle...
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..and all have to do their best
to endure the daily downpour.
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In some jungles, like here in Brazil,
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it rains so much that,
for part of the year, the trees
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are almost totally submerged.
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00:18:05,475 --> 00:18:11,395
This is a mysterious world, a place
few people have ever explored.
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00:18:14,915 --> 00:18:20,115
Here, 1,000 miles from the sea,
are dolphins.
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A newly-identified species of river
dolphin found nowhere else on Earth.
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At the shallow margins
of the flooded jungle,
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food is so abundant it supports giants.
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00:18:47,555 --> 00:18:50,155
Capybara - the biggest rodents in the world.
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00:18:55,115 --> 00:18:57,555
Giant otters, the size of a man.
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00:19:02,755 --> 00:19:04,635
And the rulers of these rivers...
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..caiman.
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They grow to 10 feet long
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and kill anything they get
between their jaws.
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00:19:18,995 --> 00:19:22,115
But there are more artful hunters,
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drawn here from the surrounding forest.
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A jaguar - the supreme jungle predator.
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00:19:59,115 --> 00:20:01,835
Capybara are strong and wary.
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The key is stealth.
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00:20:26,355 --> 00:20:30,075
She needs to get within a metre
if she is to pounce.
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00:20:53,035 --> 00:20:54,075
Not this time.
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00:21:05,035 --> 00:21:13,035
She's not the only female here.
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Few places on Earth have enough food
to support so many big cats.
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The male hunts in a different way.
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Weighing over 130 kilos,
it's hard to be stealthy.
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00:22:12,315 --> 00:22:15,515
And with so many other jaguars around,
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00:22:15,555 --> 00:22:17,915
he doesn't bother with wary capybara.
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He seeks a different prey.
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00:22:49,835 --> 00:22:51,035
He's become a killer...
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..of killers.
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00:23:19,955 --> 00:23:23,535
Jaguars have the most powerful bite
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of any cat.
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00:23:28,395 --> 00:23:30,915
And he knows the caiman's
most vulnerable point.
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The back of its skull.
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00:23:58,355 --> 00:24:03,075
For some, isolation has provided
an escape from the competition.
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The tiny island of Escudo,
off the coast of Panama.
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00:24:32,355 --> 00:24:35,675
Home to the pygmy three-toed sloth.
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This is a male,
and life here suits him well.
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Mangroves provide all the leaves he can eat,
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and there are no predators to worry him.
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00:24:55,435 --> 00:25:00,235
Island life may seem idyllic,
but it comes at a price.
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There are only a few hundred
pygmy sloths in existence...
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..and he needs a mate.
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HIGH-PITCHED SQUEAL
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That is an enticing call...
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..from a female...
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..somewhere, out there.
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The problem is
there's deep water between them.
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00:25:59,475 --> 00:26:02,635
So what should any red-blooded sloth do?
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Swim, of course.
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00:26:40,075 --> 00:26:46,435
Could this be her?
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00:26:48,795 --> 00:26:52,195
He does his best to put on a turn of speed.
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00:27:02,715 --> 00:27:04,875
But she's not the one.
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She already has a baby,
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and she won't mate again until it leaves her
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in about six months' time.
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Even life on a paradise island
can have its limitations.
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Islands can be sanctuaries for wildlife,
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00:27:38,115 --> 00:27:41,435
but that doesn't mean that life is easy.
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Some can be very challenging places indeed.
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00:27:59,515 --> 00:28:02,615
There are islands still forming today,
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built by volcanoes.
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Some erupt explosively.
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Others pour out rivers of molten rock -
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lava.
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00:28:28,635 --> 00:28:32,915
In the last 50 years, ten new
volcanic islands have been formed.
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00:29:00,355 --> 00:29:05,315
Young volcanic islands
can be tough places to survive.
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00:29:09,875 --> 00:29:13,995
This is Fernandina, one of the
Galapagos Islands in the Pacific.
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00:29:17,795 --> 00:29:23,115
It is a desolate place, but the
surrounding sea is rich with life.
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00:29:26,595 --> 00:29:31,015
And the frontier between these two
very different worlds is the home
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of one of the strangest of reptiles.
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Seagoing iguanas.
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00:29:43,195 --> 00:29:45,135
They are vegetarians,
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00:29:45,155 --> 00:29:47,815
but since there is little food
for them on land,
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00:29:47,835 --> 00:29:50,795
marine iguanas graze on the sea floor.
195
00:29:53,475 --> 00:29:58,915
A big male like this one can dive
to 30 metres and hold his breath
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00:29:58,955 --> 00:30:00,035
for half an hour.
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00:30:24,875 --> 00:30:31,515
It is an incredible adaptation
that allows them to survive
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00:30:38,635 --> 00:30:41,575
And by bringing nutrients
from the sea to the land,
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00:30:41,595 --> 00:30:44,755
the iguanas help other animals
to survive here, too.
200
00:30:48,835 --> 00:30:52,035
Crabs feed on dead skin
on the iguanas' back,
201
00:30:52,075 --> 00:30:55,995
and in turn provide
a welcome exfoliation service.
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00:31:04,155 --> 00:31:07,795
While smaller lizards prey on
the flies that pester the colony.
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00:31:30,435 --> 00:31:34,675
But not all the relationships
on this island are so harmonious.
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00:31:41,355 --> 00:31:44,035
Marine iguanas lay their eggs in sand.
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00:31:46,515 --> 00:31:50,315
In June, when the hatchlings emerge,
they are vulnerable.
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00:31:54,555 --> 00:31:57,955
They must join the adults
at the edge of the sea,
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00:31:57,995 --> 00:32:00,275
but the journey will be a dangerous one.
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Racer snakes.
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00:32:56,715 --> 00:32:58,755
The snakes missed their chance.
210
00:33:07,155 --> 00:33:09,115
But more babies are hatching...
211
00:33:14,755 --> 00:33:18,875
..and now the snakes
are on the alert.
212
00:33:18,915 --> 00:33:22,715
This is the best feeding opportunity
they will get all year.
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00:33:38,755 --> 00:33:43,075
On flat ground, a baby iguana
can outrun a racer snake...
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00:33:44,915 --> 00:33:46,755
..but others are waiting in ambush.
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00:34:14,795 --> 00:34:19,075
Another hatchling has its first
glimpse of a dangerous world.
216
00:35:17,115 --> 00:35:19,035
A snake's eyes aren't very good...
217
00:35:20,355 --> 00:35:22,195
..but they can detect movement.
218
00:35:24,115 --> 00:35:28,155
So if the hatchling keeps its nerve,
it may just avoid detection.
219
00:37:00,515 --> 00:37:02,315
A near-miraculous escape.
220
00:37:09,475 --> 00:37:13,655
The lucky survivors can begin
learning the unique way of life
221
00:37:13,675 --> 00:37:15,915
demanded by this hostile island.
222
00:37:25,915 --> 00:37:28,635
There are habitats on Earth
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00:37:28,675 --> 00:37:31,115
where food seems abundant.
224
00:37:36,035 --> 00:37:40,655
One quarter of the land on Earth
is covered by a single remarkable
225
00:37:40,675 --> 00:37:41,835
type of plant.
226
00:37:43,795 --> 00:37:44,795
Grass.
227
00:37:52,995 --> 00:37:55,955
It can be tall enough to hide a giant...
228
00:38:03,555 --> 00:38:06,155
..and the world it creates
is unique.
229
00:38:21,475 --> 00:38:23,155
These are the good times.
230
00:38:24,955 --> 00:38:26,475
But in just a few months,
231
00:38:26,515 --> 00:38:31,075
the animals will be forced
to move on in search of new growth.
232
00:38:36,115 --> 00:38:40,655
For tiny animals, the summer boom
brings opportunity
233
00:38:40,675 --> 00:38:41,915
to their doorstep.
234
00:38:45,475 --> 00:38:48,915
An excellent time to build
a tiny treehouse...
235
00:38:51,155 --> 00:38:52,315
..for a harvest mouse.
236
00:39:06,395 --> 00:39:10,195
During summer, European
meadow lands are full of food.
237
00:39:13,995 --> 00:39:15,955
But only for those that can reach it.
238
00:39:34,715 --> 00:39:37,635
Climbing grass is harder
than climbing trees,
239
00:39:37,675 --> 00:39:40,795
not least because their stems
just won't stay still.
240
00:39:48,635 --> 00:39:51,915
A prehensile tail acts like a fifth limb,
241
00:39:51,955 --> 00:39:55,555
so she's as agile as a monkey
clambering around in a tree.
242
00:40:03,955 --> 00:40:07,995
And just as well, for the best food
in this tiny forest
243
00:40:08,035 --> 00:40:09,875
is at the very top of its canopy.
244
00:40:20,635 --> 00:40:23,235
Feeding up here, she is exposed.
245
00:40:30,835 --> 00:40:31,955
A barn owl.
246
00:41:02,915 --> 00:41:04,515
Not her finest move...
247
00:41:08,475 --> 00:41:09,675
..but it did the trick.
248
00:41:11,995 --> 00:41:15,275
Harvest mice seldom go
all the way down to the ground.
249
00:41:18,715 --> 00:41:21,915
It's a tangled
and dangerous world down here.
250
00:41:35,315 --> 00:41:39,355
But she can read the pattern
of the stems overhead like a map...
251
00:41:40,555 --> 00:41:42,315
..and so find her way home.
252
00:41:50,515 --> 00:41:52,595
And not a minute too soon.
253
00:41:57,515 --> 00:41:59,475
There are mouths to feed.
254
00:42:13,155 --> 00:42:15,155
Her babies must fatten up quickly.
255
00:42:17,555 --> 00:42:20,975
They need to harvest the summer
grasses while they are still
256
00:42:20,995 --> 00:42:22,115
rich with food.
257
00:42:31,355 --> 00:42:33,715
On the grasslands of Africa,
258
00:42:33,755 --> 00:42:38,075
Jackson's widowbirds seek out fresh stems
259
00:42:38,115 --> 00:42:39,915
with a different purpose in mind.
260
00:42:45,995 --> 00:42:47,995
This male wants a mate.
261
00:42:51,315 --> 00:42:54,435
He has grown elaborate
breeding plumage for this moment...
262
00:42:56,395 --> 00:42:59,035
..but he needs a stage
on which to show it off.
263
00:43:03,635 --> 00:43:08,775
By carefully selecting grass blades,
each trimmed to the correct length,
264
00:43:08,795 --> 00:43:10,795
he is creating something very special.
265
00:43:25,595 --> 00:43:27,675
He needs an even surface...
266
00:43:30,195 --> 00:43:31,515
..and a centrepiece.
267
00:43:34,315 --> 00:43:35,795
The stage is set.
268
00:43:37,035 --> 00:43:41,235
His bachelor pad is sufficiently
neat and tidy to attract a female.
269
00:43:43,355 --> 00:43:46,155
The problem is, can she see it?
270
00:43:50,235 --> 00:43:51,235
He has competition.
271
00:44:01,635 --> 00:44:05,715
It might take more than a little
gardening to impress the ladies.
272
00:44:08,235 --> 00:44:09,915
Jumping is the right idea...
273
00:44:11,355 --> 00:44:13,395
..but he has misjudged
the height of the grass.
274
00:44:23,675 --> 00:44:25,555
His rival makes it look easy.
275
00:44:48,795 --> 00:44:50,755
Time to raise his game.
276
00:45:26,475 --> 00:45:29,255
It's not only who jumps the highest,
277
00:45:29,275 --> 00:45:32,075
but who can keep doing so the longest.
278
00:45:40,475 --> 00:45:44,755
Unable to go the distance,
his rivals drop out, one by one.
279
00:45:49,675 --> 00:45:52,915
Stamina has won him admirers.
280
00:45:54,355 --> 00:45:57,715
Now he can show off his courtship arena.
281
00:46:06,875 --> 00:46:10,275
And engage in a little romantic
hide and seek.
282
00:46:22,395 --> 00:46:26,155
Finally, he's done enough.
283
00:46:33,715 --> 00:46:36,195
The seasonality of the grassland
284
00:46:36,235 --> 00:46:40,055
means the time of opportunity is
swiftly followed
285
00:46:40,075 --> 00:46:41,715
by times of hardship.
286
00:46:44,635 --> 00:46:48,355
In winter, the prairies
of North America freeze.
287
00:46:51,795 --> 00:46:54,435
60 million tonnes of snow
288
00:46:54,475 --> 00:46:57,315
now blanket this herd of bison's territory.
289
00:46:59,755 --> 00:47:03,595
Pushing through the drifts is
exhausting work,
290
00:47:03,635 --> 00:47:06,355
and the bison are now slowly starving.
291
00:47:12,675 --> 00:47:15,915
Just keeping warm saps
huge amounts of energy.
292
00:47:22,275 --> 00:47:26,035
Their thick coats can insulate them
down to minus 20 Fahrenheit.
293
00:47:27,235 --> 00:47:28,915
It is now minus 40.
294
00:47:32,275 --> 00:47:34,795
The only thing that will keep them alive
295
00:47:34,835 --> 00:47:37,755
is buried beneath three feet of snow.
296
00:47:42,635 --> 00:47:45,875
And that's a problem shared
with a surprising neighbour.
297
00:48:03,915 --> 00:48:07,235
The food the fox seeks is
also deep beneath the snow.
298
00:48:19,875 --> 00:48:22,135
The survival of both creatures
299
00:48:22,155 --> 00:48:24,595
depends on getting through to the ground.
300
00:48:30,115 --> 00:48:33,155
For the bison, it will be
a matter of brute strength.
301
00:48:38,275 --> 00:48:41,715
Their lightweight neighbour
needs more precision.
302
00:49:06,595 --> 00:49:11,715
The bison have reached their goal -
a mouthful of withered grass.
303
00:49:15,755 --> 00:49:20,075
And where the bison have dug,
the fox now spots an opportunity.
304
00:49:29,115 --> 00:49:31,115
Every footstep counts.
305
00:49:34,155 --> 00:49:35,515
But he mustn't break through...
306
00:49:36,755 --> 00:49:37,755
..yet.
307
00:49:41,115 --> 00:49:44,235
He listens carefully to pinpoint his target.
308
00:49:50,235 --> 00:49:51,235
It's moving.
309
00:50:12,875 --> 00:50:13,875
A vole.
310
00:50:16,355 --> 00:50:21,835
Small, but 100 times more nutritious
than a mouthful of dried grass.
311
00:50:28,515 --> 00:50:31,995
To get through the winter on these prairies,
312
00:50:32,035 --> 00:50:34,435
sometimes brain beats brawn.
313
00:50:41,155 --> 00:50:45,995
Seasonal change brings the
transformation of the landscape
314
00:50:46,035 --> 00:50:47,395
to more than just the grasslands.
315
00:50:49,075 --> 00:50:53,515
In America, the spring melt turns
the slopes of the Rocky Mountains
316
00:50:53,555 --> 00:50:55,355
from white to green.
317
00:51:18,115 --> 00:51:20,335
Meadows that only a few weeks ago
318
00:51:20,355 --> 00:51:24,035
were buried deep beneath the snow
are now full of life.
319
00:51:39,675 --> 00:51:42,875
Bears have emerged from their winter dens.
320
00:51:47,195 --> 00:51:48,555
It's becoming warmer,
321
00:51:48,595 --> 00:51:51,595
and they are keen to shed
their thick winter coats.
322
00:51:55,155 --> 00:51:58,595
Mothers show their cubs
what to do about this.
323
00:52:08,795 --> 00:52:09,955
They'll soon catch on.
324
00:52:13,315 --> 00:52:16,995
Some trees, it seems, are
particularly suitable for rubbing.
325
00:52:18,475 --> 00:52:20,235
Bears have their favourites,
326
00:52:20,275 --> 00:52:22,875
and will travel long distances
to visit them.
327
00:52:26,195 --> 00:52:28,875
Some itches just have to be scratched.
328
00:52:50,275 --> 00:52:53,995
There are now 30 bears in this one valley.
329
00:53:00,595 --> 00:53:05,595
As they rub, each leaves an
individual and recognisable scent.
330
00:53:09,435 --> 00:53:12,715
So the tree soon carries
a list of who's around...
331
00:53:13,875 --> 00:53:16,355
..which might help individuals
to avoid a fight.
332
00:53:18,355 --> 00:53:20,975
To best spread their scent,
333
00:53:20,995 --> 00:53:23,235
they really have to put their back into it.
334
00:54:05,315 --> 00:54:07,555
But the summer is short.
335
00:54:07,595 --> 00:54:12,395
Itches satisfactorily scratched,
it's time to eat.
336
00:54:21,235 --> 00:54:23,595
Dawn in the high Andes.
337
00:54:26,835 --> 00:54:31,115
Here, too, the sun's warmth
brings rapid relief.
338
00:54:35,795 --> 00:54:37,995
Mountain viscacha are up early
339
00:54:38,035 --> 00:54:41,875
to claim the best places
to catch the sun's first rays.
340
00:55:03,755 --> 00:55:08,075
For others up here,
the sunrise is even more welcome.
341
00:55:11,235 --> 00:55:13,475
At over 4,000 metres,
342
00:55:13,515 --> 00:55:16,515
this is the highest flamingo colony
in the world.
343
00:55:19,235 --> 00:55:23,715
At night, it gets so cold that even
this salty water freezes over.
344
00:55:26,555 --> 00:55:28,795
And now the flamingos
are trapped in the ice.
345
00:55:34,875 --> 00:55:37,515
Eventually, the sun thins the ice.
346
00:55:38,675 --> 00:55:41,875
But it's still a struggle for
the flamingos to break free.
347
00:56:02,715 --> 00:56:05,315
Walking on thin ice is always risky.
348
00:56:16,835 --> 00:56:19,195
And it's hard to retain one's dignity.
349
00:56:20,835 --> 00:56:23,035
Especially when you're wearing stilts.
350
00:56:36,475 --> 00:56:38,275
At these altitudes,
351
00:56:38,315 --> 00:56:43,475
the sun's power can quickly turn
from salvation to threat.
352
00:56:49,835 --> 00:56:52,035
The atmosphere is so thin,
353
00:56:52,075 --> 00:56:55,475
there is very little protection
from ultraviolet radiation.
354
00:56:57,195 --> 00:57:00,875
By mid-morning, it's risky
to linger out in the open.
355
00:57:04,475 --> 00:57:07,275
The viscacha are forced
to head for the shade.
356
00:57:12,515 --> 00:57:15,555
Out on the lake, there is nowhere to hide.
357
00:57:21,995 --> 00:57:26,215
The white crust of the soda lake
reflects the sun's glare,
358
00:57:26,235 --> 00:57:29,315
and increases the impact
of its ultraviolet rays.
359
00:57:34,635 --> 00:57:38,755
By midday, uncovered human skin
will burn in four minutes.
360
00:57:44,875 --> 00:57:47,435
But this doesn't seem
to bother the flamingos.
361
00:57:48,715 --> 00:57:50,915
In fact, they are on parade.
362
00:58:21,035 --> 00:58:22,835
During the breeding season,
363
00:58:22,875 --> 00:58:26,275
flamingos perform
these bizarre courtship dances,
364
00:58:26,315 --> 00:58:28,355
even through the hottest time of the day.
365
00:58:35,635 --> 00:58:38,715
They are so eager,
they don't even pause to feed.
366
00:58:57,395 --> 00:59:00,195
The rules are something of a mystery.
367
00:59:00,235 --> 00:59:04,155
But after a month of dancing,
all the birds will have paired off
368
00:59:04,195 --> 00:59:06,315
and will be getting ready to mate.
369
00:59:13,035 --> 00:59:17,255
Up here, there are few other
creatures to bother the flamingos,
370
00:59:17,275 --> 00:59:21,435
but then, few other creatures could
even tolerate these conditions.
371
00:59:26,235 --> 00:59:29,315
Such extreme habitats require wildlife
372
00:59:29,355 --> 00:59:32,035
to be extraordinarily resilient.
373
00:59:36,755 --> 00:59:39,155
And nowhere more so than in the desert.
374
00:59:43,075 --> 00:59:46,595
With temperatures reaching
almost 50 degrees Celsius,
375
00:59:46,635 --> 00:59:49,375
there's no escape from the scorching sun,
376
00:59:49,395 --> 00:59:50,795
the wind and the dust.
377
01:00:13,555 --> 01:00:17,715
This is the oldest desert in the world -
378
01:00:17,755 --> 01:00:20,195
the Namib, in south-west Africa.
379
01:00:21,875 --> 01:00:24,915
It's been dry for 55 million years.
380
01:00:30,435 --> 01:00:34,195
Life here, for the hunter,
is as hard as it gets.
381
01:00:45,075 --> 01:00:47,455
A pride of lions.
382
01:00:47,475 --> 01:00:49,595
One of the very few that endures
383
01:00:49,635 --> 01:00:53,475
this desert's scorching temperatures
and lack of water.
384
01:01:24,475 --> 01:01:26,995
A dry riverbed on the edge
of their territory.
385
01:01:30,755 --> 01:01:32,875
The only animals here are giraffe.
386
01:01:34,275 --> 01:01:38,555
But these one-ton giants could kill
a lion with a single kick.
387
01:01:51,955 --> 01:01:55,115
Lions seldom tackle such formidable prey...
388
01:01:58,315 --> 01:02:02,635
..but this pride can't go on
much longer without food.
389
01:02:31,155 --> 01:02:34,195
The whole pride must work together
as a team if they're to succeed.
390
01:03:03,395 --> 01:03:05,795
Two lionesses lead the chase.
391
01:03:05,835 --> 01:03:08,555
Others race to cut off
possible escape routes.
392
01:03:25,595 --> 01:03:29,635
The giraffe has the speed
and stamina to outrun the pride.
393
01:03:32,435 --> 01:03:34,235
But it's being chased into a trap.
394
01:03:36,915 --> 01:03:39,315
Up ahead, the lead female waits.
395
01:03:49,915 --> 01:03:51,955
It's now up to her.
396
01:04:11,195 --> 01:04:13,675
Most lion hunts end in failure.
397
01:04:15,675 --> 01:04:20,195
But no lions fail more often than
those that live in the desert.
398
01:04:27,435 --> 01:04:30,995
In the land where food and water is
so limited,
399
01:04:31,035 --> 01:04:33,315
competition can be intense.
400
01:04:36,795 --> 01:04:40,955
It's July in Nevada
in the Western United States.
401
01:04:42,995 --> 01:04:44,795
The hottest time of the year.
402
01:04:57,955 --> 01:05:00,715
Bands of wild horses, mustang,
403
01:05:00,755 --> 01:05:04,835
are converging on one of the last
remaining waterholes for miles.
404
01:05:10,555 --> 01:05:14,615
Now, water not only offers them
the chance to drink.
405
01:05:14,635 --> 01:05:16,675
It can also bring power.
406
01:05:19,835 --> 01:05:22,955
If a stallion can control access to water,
407
01:05:22,995 --> 01:05:25,955
he will secure mating rights
to the entire herd.
408
01:05:27,915 --> 01:05:30,635
So, stallions try to dominate these pools,
409
01:05:30,675 --> 01:05:33,315
fighting off rivals who venture too close.
410
01:05:46,635 --> 01:05:47,675
A stranger.
411
01:05:49,555 --> 01:05:51,975
He has travelled ten miles to be here,
412
01:05:51,995 --> 01:05:54,995
because the pools where he's come
from have already dried up.
413
01:05:59,435 --> 01:06:01,435
With him come his females.
414
01:06:04,075 --> 01:06:07,055
If he can't provide them with water,
they will leave him
415
01:06:07,075 --> 01:06:10,795
for the white stallion
who already dominates this pool.
416
01:06:21,435 --> 01:06:23,475
So, he will have to fight.
417
01:07:24,035 --> 01:07:25,515
There is everything to lose.
418
01:07:27,515 --> 01:07:31,715
A broken leg or a shattered jaw
would mean a slow and painful death.
419
01:07:53,035 --> 01:07:56,075
A missed kick and it's all over.
420
01:07:58,715 --> 01:08:00,475
The new arrival has won.
421
01:08:02,955 --> 01:08:07,155
And his prize is more than just
a chance to drink.
422
01:08:07,195 --> 01:08:10,295
He has provided for his herd
and, in the process,
423
01:08:10,315 --> 01:08:12,195
stolen his rival's females.
424
01:08:14,435 --> 01:08:16,755
The white stallion's rule is over.
425
01:08:29,435 --> 01:08:31,075
When rain does come,
426
01:08:31,115 --> 01:08:34,755
it has the power to bring life
to even the desert.
427
01:08:53,395 --> 01:08:57,015
And no creature exploits
the greening of the land
428
01:08:57,035 --> 01:09:01,755
more quickly or more
dramatically than a locust.
429
01:09:10,195 --> 01:09:12,235
Madagascar's arid south-west
430
01:09:12,275 --> 01:09:15,075
has received its highest rainfall in years.
431
01:09:21,395 --> 01:09:23,355
Now an army is on the march,
432
01:09:23,395 --> 01:09:26,875
attracted by the smell
of newly-sprouting grass.
433
01:09:39,275 --> 01:09:41,755
Locusts are normally solitary creatures,
434
01:09:41,795 --> 01:09:45,575
but when food becomes suddenly
plentiful, they come together
435
01:09:45,595 --> 01:09:50,035
into an unstoppable force that
devours everything in its path.
436
01:10:08,475 --> 01:10:12,635
But this devastation is
about to get a lot worse.
437
01:10:24,515 --> 01:10:28,355
The locusts now transform
into winged adults.
438
01:10:29,435 --> 01:10:31,515
And with conditions as good as this,
439
01:10:31,555 --> 01:10:34,115
they do so three times faster than normal.
440
01:10:36,275 --> 01:10:38,915
Now they are at their most voracious.
441
01:10:40,595 --> 01:10:43,435
And with wings, they can take to the skies.
442
01:11:08,635 --> 01:11:12,675
Once airborne, the locusts can
travel over 60 miles a day
443
01:11:12,715 --> 01:11:15,755
in their search for new feeding grounds.
444
01:11:29,555 --> 01:11:33,875
A super swarm of this scale
may only appear once in a decade.
445
01:11:35,275 --> 01:11:38,235
This one extends over 200 square miles
446
01:11:38,275 --> 01:11:46,275
and contains several billion individuals.
447
01:12:23,475 --> 01:12:26,515
Nothing can strip a land of its vegetation
448
01:12:26,555 --> 01:12:30,595
with such speed and thoroughness
as a plague of locusts.
449
01:12:33,755 --> 01:12:37,195
When the food eventually runs out,
the whole army will die.
450
01:12:38,795 --> 01:12:41,035
But not before it's devastated the land.
451
01:12:52,755 --> 01:12:54,575
In the last 6,000 years,
452
01:12:54,595 --> 01:12:56,915
a new habitat has appeared,
453
01:12:56,955 --> 01:13:02,595
entirely designed and constructed
by one species for its own purpose.
454
01:13:05,875 --> 01:13:10,475
We humans create homes
for ourselves, cities -
455
01:13:10,515 --> 01:13:13,955
with consequences for wildlife,
good and bad.
456
01:13:17,435 --> 01:13:19,595
Rome in December.
457
01:13:19,635 --> 01:13:22,235
Visitors are drawn in by the city's heat.
458
01:13:24,115 --> 01:13:25,915
And they're leaving their mark.
459
01:13:29,235 --> 01:13:31,235
In a single winter's day,
460
01:13:31,275 --> 01:13:34,915
ten tonnes of its droppings
rain down on the city.
461
01:13:42,355 --> 01:13:43,355
Starlings.
462
01:13:46,715 --> 01:13:49,515
In the evening, they come back
to the warmth of the city
463
01:13:49,555 --> 01:13:51,715
after feeding
in the neighbouring countryside.
464
01:13:54,915 --> 01:13:58,255
They must return to their roosting trees,
465
01:13:58,275 --> 01:13:59,735
but the first to do so are
466
01:13:59,755 --> 01:14:07,755
at the highest risk of being caught
by birds of prey.
467
01:14:10,435 --> 01:14:11,795
There's safety in numbers.
468
01:14:14,755 --> 01:14:16,235
As daylight fades,
469
01:14:16,275 --> 01:14:20,595
the sky fills with a staggering
one million starlings.
470
01:14:23,475 --> 01:14:28,235
And then follows one
of Nature's great spectaculars.
471
01:15:15,035 --> 01:15:17,395
We still do not fully understand.
472
01:15:28,475 --> 01:15:30,595
Eventually, en masse,
473
01:15:30,635 --> 01:15:34,995
they brave the descent and fill the
branches of their favourite trees.
474
01:15:40,355 --> 01:15:42,235
On these cold winter nights,
475
01:15:42,275 --> 01:15:46,835
the city's extra warmth can mean the
difference between life and death.
476
01:16:00,515 --> 01:16:05,195
For the bold, this new world
can offer other opportunities.
477
01:16:11,395 --> 01:16:16,755
But to compete with humanity
takes intelligence and nerve.
478
01:16:21,755 --> 01:16:24,695
One enterprising species of monkey
479
01:16:24,715 --> 01:16:28,395
has moved into the city of Jaipur in India.
480
01:16:31,675 --> 01:16:32,755
The Rhesus macaque.
481
01:16:37,795 --> 01:16:41,355
But how to get a share
of all this juicy fruit?
482
01:16:49,995 --> 01:16:51,075
Every morning,
483
01:16:51,115 --> 01:16:55,175
the troop make the same journey
through the urban jungle,
484
01:16:55,195 --> 01:16:56,995
just as human commuters do.
485
01:17:19,875 --> 01:17:23,435
Sometimes, inevitably,
there are traffic jams.
486
01:17:47,875 --> 01:17:51,035
Once they get to the market, trouble begins.
487
01:18:12,635 --> 01:18:14,875
Being both intelligent and brazen
488
01:18:14,915 --> 01:18:18,115
is the key to beating human beings
on their home turf.
489
01:18:56,315 --> 01:18:57,875
It's daylight robbery.
490
01:19:08,315 --> 01:19:12,835
In the city, conflict between man
and animal might seem inevitable.
491
01:19:15,515 --> 01:19:18,335
We create these cities for ourselves,
492
01:19:18,355 --> 01:19:20,795
and some of the changes we introduce
493
01:19:20,835 --> 01:19:22,755
can be hard for animals to cope with.
494
01:19:27,235 --> 01:19:30,175
One of the greatest changes of recent times
495
01:19:30,195 --> 01:19:35,235
has come from a single invention
made less than 140 years ago.
496
01:19:39,515 --> 01:19:40,555
Electric light.
497
01:19:43,275 --> 01:19:45,395
It has become more and more powerful...
498
01:19:48,075 --> 01:19:49,715
..filling our streets with light.
499
01:20:01,675 --> 01:20:03,075
It is everywhere in the city.
500
01:20:05,675 --> 01:20:06,955
It even goes underground.
501
01:20:26,435 --> 01:20:29,015
The difference between day and night
502
01:20:29,035 --> 01:20:31,515
has become less and less perceptible.
503
01:20:41,475 --> 01:20:49,475
And that has a profound effect
on the activities of wildlife.
504
01:20:50,835 --> 01:20:54,915
In the wilderness, light triggers
all kinds of behaviour.
505
01:21:01,315 --> 01:21:02,975
On the night of the full moon,
506
01:21:02,995 --> 01:21:06,735
hundreds of tiny hawksbill turtle
hatchlings emerge
507
01:21:06,755 --> 01:21:09,395
from the safety of
their nest, deep in the sand.
508
01:21:12,515 --> 01:21:15,755
Their instinct is to reach the sea
as quickly as possible.
509
01:21:18,395 --> 01:21:22,715
And their guide is the light of the
full moon, reflected on the water.
510
01:21:30,235 --> 01:21:31,835
But this young hatchling...
511
01:21:32,835 --> 01:21:33,835
..is confused.
512
01:21:42,355 --> 01:21:44,795
It's going in the wrong direction.
513
01:21:50,155 --> 01:21:52,235
Bright light is coming from the land.
514
01:21:55,635 --> 01:21:59,835
And all these hatchlings are
travelling up the beach towards it.
515
01:22:06,395 --> 01:22:09,115
Predators are ready to take advantage.
516
01:22:11,035 --> 01:22:14,915
Crabs now make their burrows
directly beneath the beach lights...
517
01:22:15,955 --> 01:22:18,355
..and wait for their prey
to come to them.
518
01:22:40,795 --> 01:22:44,635
Even if a hatchling escapes,
they're still in peril.
519
01:22:53,675 --> 01:22:56,515
The lights become more and more bewildering.
520
01:23:20,915 --> 01:23:23,755
80% of all hatchlings on this beach
521
01:23:23,795 --> 01:23:27,635
are now disoriented
by the lights of the town.
522
01:23:48,155 --> 01:23:50,555
Roads bring many to their end.
523
01:24:05,835 --> 01:24:09,355
Hundreds get trapped in storm drains
every night.
524
01:24:23,995 --> 01:24:26,055
Exhausted by the effort of travelling
525
01:24:26,075 --> 01:24:27,515
such a distance on land...
526
01:24:30,195 --> 01:24:34,195
..this hatchling's chances
of surviving the night are slim.
527
01:24:46,875 --> 01:24:49,695
This turtle is one of the countless species
528
01:24:49,715 --> 01:24:51,835
that have been unable to adapt
529
01:24:51,875 --> 01:24:55,555
to the change brought about
by the urban environment.
530
01:25:02,675 --> 01:25:08,155
Whether we choose to live in harmony
with wildlife is up to us.
531
01:25:08,195 --> 01:25:10,915
But there is one city where that idea
532
01:25:10,955 --> 01:25:13,555
is being applied on a major scale -
533
01:25:16,755 --> 01:25:17,835
Singapore.
534
01:25:23,715 --> 01:25:28,475
Two million trees have been
planted here in the last 45 years.
535
01:25:30,315 --> 01:25:34,555
This city is now richer in species
than any other in the world.
536
01:25:38,755 --> 01:25:42,115
And this practice extends
to all parts of the city.
537
01:25:45,315 --> 01:25:47,355
The waterways have been cleaned up
538
01:25:47,395 --> 01:25:50,355
and smooth-coated otters are coming back.
539
01:25:54,475 --> 01:25:59,315
But perhaps the most spectacular
example of city greening
540
01:25:59,355 --> 01:26:02,235
is this grove of "super trees".
541
01:26:16,635 --> 01:26:20,435
Creepers have been planted to grow
over the outermost branches.
542
01:26:24,115 --> 01:26:29,815
This is a new urban world that
we have now designed and built
543
01:26:29,835 --> 01:26:31,435
with others in mind.
544
01:26:34,315 --> 01:26:37,635
Create the space and the animals will come.
545
01:26:46,795 --> 01:26:49,635
Is this a vision
for our cities of the future?
546
01:26:58,795 --> 01:27:02,015
It could be possible
to see wildlife thriving
547
01:27:02,035 --> 01:27:05,075
within our cities across the planet.
548
01:27:07,395 --> 01:27:11,675
We, after all, are the architects
of the urban world.
549
01:27:13,715 --> 01:27:15,795
Looking down on this great metropolis,
550
01:27:15,835 --> 01:27:20,715
the ingenuity with which we continue
to reshape the surface of our planet
551
01:27:20,755 --> 01:27:21,755
is very striking.
552
01:27:22,835 --> 01:27:25,015
It is also sobering.
553
01:27:25,035 --> 01:27:27,715
It reminds me of just how easy it is for us
554
01:27:27,755 --> 01:27:30,755
to lose our connection
with the natural world.
555
01:27:32,195 --> 01:27:36,355
Yet it's on this connection
that the future of both humanity
556
01:27:36,395 --> 01:27:38,835
and the natural world will depend.
557
01:27:40,355 --> 01:27:45,555
It's surely our responsibility
to do everything within our power
558
01:27:45,595 --> 01:27:50,015
to create a planet that provides
a home, not just for us,
559
01:27:50,035 --> 01:27:52,715
but for all life on Earth.
45524
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