Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated:
1
00:00:18,218 --> 00:00:20,886
They are driven...to move.
2
00:00:23,223 --> 00:00:26,325
To move...and to multiply.
3
00:00:27,927 --> 00:00:32,364
Possessed by the insatiable
need to breed...
4
00:00:32,399 --> 00:00:36,869
they will journey
to brutal African battlefields...
5
00:00:36,903 --> 00:00:40,005
and brawl on South Atlantic shores.
6
00:00:41,674 --> 00:00:46,912
For the sake of their young,
they will blacken the skies...
7
00:00:46,946 --> 00:00:50,015
and terrorize rainforest floors.
8
00:00:51,851 --> 00:00:54,686
Right now,
the world's wild parents
9
00:00:54,721 --> 00:00:57,356
are on the march...
10
00:00:57,390 --> 00:00:58,991
on the wing...
11
00:01:01,461 --> 00:01:03,862
on the run.
12
00:01:03,897 --> 00:01:07,933
And these are the tales
of their sacrifice...
13
00:01:07,967 --> 00:01:11,804
the most moving stories on Earth...
14
00:01:11,838 --> 00:01:15,541
the stories of the great migrations.
15
00:01:44,003 --> 00:01:46,872
Winter in the South Atlantic.
16
00:01:48,341 --> 00:01:50,642
One of the worst places
in the world...
17
00:01:50,677 --> 00:01:52,778
to be left behind.
18
00:01:55,548 --> 00:01:59,885
But that is Johnny rook's lot in life.
19
00:01:59,919 --> 00:02:04,923
Here on a desolate archipelago
off South America,
20
00:02:04,958 --> 00:02:08,360
this bird of prey clings to life...
21
00:02:10,063 --> 00:02:13,365
waiting for the migrants to return.
22
00:02:37,924 --> 00:02:43,996
Now, the flare of a September dawn
announces spring's feeble arrival.
23
00:02:48,268 --> 00:02:52,971
And for Johnny rook,
the wait is over...
24
00:02:53,006 --> 00:02:55,240
because some of the world's
greatest wanderers
25
00:02:55,275 --> 00:02:57,376
are heading his way.
26
00:03:02,582 --> 00:03:06,852
They've been traveling the globe
for months, even years.
27
00:03:08,755 --> 00:03:13,292
Only one thing can bring
their wanderings to a halt--
28
00:03:13,326 --> 00:03:16,795
none of them can give birth at sea.
29
00:03:27,740 --> 00:03:31,710
From around the southern pole,
nomads are now converging
30
00:03:31,744 --> 00:03:36,114
on these shards of rock
known as the Falklands.
31
00:03:38,918 --> 00:03:41,653
They will give up
the lives they know best--
32
00:03:41,688 --> 00:03:45,791
on wind or waves--
for the sake of their young.
33
00:04:02,609 --> 00:04:06,278
After months of migrating
through frigid southern waters,
34
00:04:06,312 --> 00:04:08,847
up to 25 miles a day,
35
00:04:08,881 --> 00:04:13,485
rockhopper penguins
torpedo in for a hard landing.
36
00:04:17,590 --> 00:04:22,961
These sleek, hardy birds must
abandon the sea to reproduce.
37
00:04:30,637 --> 00:04:33,772
Then there are
the true behemoths.
38
00:04:35,508 --> 00:04:40,145
Back from 10 months of hunting
off the Antarctic ice sheet,
39
00:04:40,179 --> 00:04:45,183
the massive southern elephant seal
humps ashore.
40
00:04:45,218 --> 00:04:48,687
He has to make a stand here
where the females are returning--
41
00:04:48,721 --> 00:04:51,823
or lose his chance to breed.
42
00:04:55,928 --> 00:05:00,532
He is four tons
of raw sexual aggression.
43
00:05:10,743 --> 00:05:17,482
For migratory credentials,
little can beat the black-browed albatross.
44
00:05:17,517 --> 00:05:21,720
From tip to tip,
its wings span eight feet.
45
00:05:27,994 --> 00:05:34,366
This superb glider can soar
almost effortlessly 20 hours a day.
46
00:05:42,075 --> 00:05:47,145
[albatrosses chattering]
47
00:05:50,783 --> 00:05:55,487
Waiting in this bustling metropolis
of hundreds of thousands of birds,
48
00:05:55,521 --> 00:06:00,325
her mate shores up the nest
from last year's breeding.
49
00:06:08,267 --> 00:06:10,602
And after seven lonely months,
50
00:06:10,636 --> 00:06:14,773
and tens of thousands of miles
riding the southern sea winds,
51
00:06:14,807 --> 00:06:18,643
they share an ecstatic
restating of vows.
52
00:06:25,251 --> 00:06:28,487
Their bond may last 30 years.
53
00:06:34,360 --> 00:06:37,229
[squawking and chattering]
54
00:06:46,839 --> 00:06:51,042
Up and down the shores,
nests are being tended to,
55
00:06:51,077 --> 00:06:53,912
bonds renewed...
56
00:06:53,946 --> 00:06:56,481
and eggs laid.
57
00:07:02,655 --> 00:07:07,959
For the next two months,
the couple has only one goal:
58
00:07:07,994 --> 00:07:11,029
to keep the egg alive.
59
00:07:32,418 --> 00:07:37,122
But someone else has
his eye on the eggs, too.
60
00:07:37,156 --> 00:07:41,993
Johnny rook, otherwise known
as the striated caracara,
61
00:07:42,028 --> 00:07:46,498
has waited through a brutal winter
for this bounty.
62
00:08:03,583 --> 00:08:08,153
An egg tumbled from a nest
is fair game for Johnny rook.
63
00:08:10,389 --> 00:08:14,693
He'll soon have his own
clamoring brood to look after.
64
00:08:19,232 --> 00:08:22,634
[albatrosses squawking]
65
00:08:48,027 --> 00:08:50,662
On another stretch of beach,
66
00:08:50,696 --> 00:08:55,033
the shoreline quakes
with desperate battles to dominate.
67
00:09:01,641 --> 00:09:04,776
The stakes are unimaginably high.
68
00:09:06,913 --> 00:09:09,514
Only a privileged few
elephant seal bulls
69
00:09:09,549 --> 00:09:12,751
will become beachmasters--
70
00:09:12,785 --> 00:09:15,587
controlling harems
of dozens of females--
71
00:09:15,621 --> 00:09:18,356
and reproducing abundantly.
72
00:09:20,826 --> 00:09:23,862
[low rumbling]
73
00:09:27,867 --> 00:09:32,337
This is no place for a young male
to stick his nose in.
74
00:09:40,746 --> 00:09:45,016
[rumbling]
75
00:09:51,958 --> 00:09:56,628
Usually trumpeted warnings
make challengers back off...
76
00:09:59,065 --> 00:10:01,166
but not all.
77
00:10:25,057 --> 00:10:29,527
Blood runs freely
from slashed noses and necks.
78
00:10:38,204 --> 00:10:42,540
They even fight dirty,
going for the eyes.
79
00:11:10,703 --> 00:11:16,908
The loser's breeding chances,
for now, are ground into the sand.
80
00:11:20,780 --> 00:11:25,250
[rumbling]
81
00:11:25,284 --> 00:11:30,288
But this beachmaster's triumph
is just the beginning of his troubles.
82
00:11:36,062 --> 00:11:40,832
Ahead lie dozens of fights--
and perhaps a hundred matings--
83
00:11:40,866 --> 00:11:44,202
all for the sake of his bloodline.
84
00:11:59,518 --> 00:12:02,554
The need to pass on
one's genetic legacy
85
00:12:02,588 --> 00:12:06,124
is a great motivator of migrations.
86
00:12:09,061 --> 00:12:12,030
Nothing else could drive
the nomads of the Falklands
87
00:12:12,064 --> 00:12:14,899
to tolerate life on land.
88
00:12:17,269 --> 00:12:19,571
Nothing else could make
migrating mothers
89
00:12:19,605 --> 00:12:22,107
stand up to great predators...
90
00:12:24,877 --> 00:12:26,811
or to drive potential fathers
91
00:12:26,846 --> 00:12:31,483
to travel great distances
to deadly battlefields.
92
00:12:40,259 --> 00:12:44,229
Parenting on the move
is all about sacrifice.
93
00:13:01,013 --> 00:13:04,182
And in the forests
of northeastern Australia
94
00:13:04,216 --> 00:13:10,588
another great journey spurred
by parental dedication is about to begin.
95
00:13:21,033 --> 00:13:25,336
On translucent tawny wings,
a little red flying fox
96
00:13:25,371 --> 00:13:29,307
flaps homeward after
a night of intense foraging.
97
00:13:31,343 --> 00:13:34,813
And she is one of millions.
98
00:13:34,847 --> 00:13:37,749
[bats squeaking]
99
00:14:00,072 --> 00:14:04,709
Somehow, she finds her pup
in the din of the camp.
100
00:14:12,084 --> 00:14:15,486
She wraps him
in her nursing embrace.
101
00:14:17,590 --> 00:14:22,093
He needs calcium from her milk
to build his flimsy bones--
102
00:14:22,127 --> 00:14:25,730
and he's leaching it away from
her own fragile flying machinery
103
00:14:25,764 --> 00:14:28,233
at an alarming rate.
104
00:14:40,179 --> 00:14:45,083
The bats have eaten through the calcium
and energy-rich eucalyptus blossoms
105
00:14:45,117 --> 00:14:47,352
for miles around.
106
00:14:48,787 --> 00:14:54,959
The situation is getting desperate--
the need to move intense.
107
00:14:59,665 --> 00:15:02,267
But they can't migrate
to greener pastures
108
00:15:02,301 --> 00:15:06,938
until the last of the youngsters
has been weaned.
109
00:15:06,972 --> 00:15:11,676
So mother has become
stingy and edgy.
110
00:15:21,020 --> 00:15:23,288
Readying for the migration ahead,
111
00:15:23,322 --> 00:15:29,327
she tongues oily secretions over
every bit of her flight equipment.
112
00:15:40,039 --> 00:15:46,577
A bat's wings are essentially
enormous webbed hands,
113
00:15:46,612 --> 00:15:49,914
elongated finger bones
providing the struts
114
00:15:49,949 --> 00:15:54,686
to unfold and manipulate
the flight membranes.
115
00:16:03,462 --> 00:16:08,866
As dusk settles,
the migration begins.
116
00:16:12,171 --> 00:16:16,474
The little reds, wings spreading
three feet tip to tip,
117
00:16:16,508 --> 00:16:20,378
blacken the skies
with their departure.
118
00:16:24,783 --> 00:16:27,485
Tonight, they have to
travel many miles
119
00:16:27,519 --> 00:16:30,421
with their newly weaned young--
120
00:16:34,593 --> 00:16:39,464
and inexperience on the wing
will prove deadly.
121
00:16:59,685 --> 00:17:02,320
Parenting is risky business.
122
00:17:07,226 --> 00:17:09,961
Migrants around the world
will risk everything
123
00:17:09,995 --> 00:17:11,929
for the next generation.
124
00:17:16,835 --> 00:17:20,872
But before you can breed,
you must earn the right.
125
00:17:22,808 --> 00:17:27,512
And in Africa, one species
readies for battle.
126
00:17:45,531 --> 00:17:51,269
ln the war-wracked country of Sudan
lies Boma National Park,
127
00:17:51,303 --> 00:17:55,640
the largest intact savannah
in East Africa.
128
00:17:59,278 --> 00:18:04,649
Mile upon mile of what looks
like pristine wilderness unfolds--
129
00:18:07,252 --> 00:18:10,955
but much of this
is an empty paradise.
130
00:18:19,498 --> 00:18:23,434
During the Sudan's decades
of ruinous civil war,
131
00:18:23,469 --> 00:18:28,372
the park supported rebel armies
and untold refugees.
132
00:18:32,845 --> 00:18:36,047
The wildlife was decimated...
133
00:18:36,081 --> 00:18:37,548
and it was long feared
134
00:18:37,583 --> 00:18:40,585
that one of the most spectacular
migrations on Earth--
135
00:18:40,619 --> 00:18:43,821
not seen by outsiders in 20 years--
136
00:18:43,856 --> 00:18:46,057
had been wiped out.
137
00:18:54,800 --> 00:19:01,105
Then in 2007, aerial surveys
began spotting them...
138
00:19:01,140 --> 00:19:04,075
handfuls...
139
00:19:04,109 --> 00:19:07,712
then hundreds of them.
140
00:19:07,746 --> 00:19:13,017
Eventually, estimates reached
in the hundreds of thousands.
141
00:19:22,227 --> 00:19:27,365
Miraculously, the white-eared kob
had survived.
142
00:19:27,399 --> 00:19:32,136
A magnificent antelope that lives
nowhere else on Earth.
143
00:19:36,175 --> 00:19:37,675
The kob have been migrating
144
00:19:37,709 --> 00:19:42,380
in numbers perhaps equal
to those in the Serengeti--
145
00:19:42,414 --> 00:19:44,115
covering hundreds of miles
146
00:19:44,149 --> 00:19:47,051
from their wet season
feeding grounds in the south
147
00:19:47,085 --> 00:19:50,388
to their breeding battlegrounds
in the north.
148
00:19:53,225 --> 00:19:57,028
And it saved them.
149
00:19:57,062 --> 00:20:01,032
Life on the move kept them
a step ahead of the guns
150
00:20:01,066 --> 00:20:03,367
and human hunger.
151
00:20:16,848 --> 00:20:19,817
By November,
the blinding equatorial sun
152
00:20:19,851 --> 00:20:24,222
has turned their southern water holes
into sucking mud--
153
00:20:33,065 --> 00:20:36,367
a trap for unwary youngsters.
154
00:20:39,338 --> 00:20:43,808
And so they must move north
toward permanent water.
155
00:20:47,346 --> 00:20:49,547
Their pace quickens
with the males' need
156
00:20:49,581 --> 00:20:52,617
to reach their ancient
battlegrounds.
157
00:20:57,489 --> 00:20:59,490
After months on the move,
158
00:20:59,524 --> 00:21:02,793
they arrive at the northern edge
of their migration--
159
00:21:02,828 --> 00:21:06,297
a network of swamps and rivers--
160
00:21:06,331 --> 00:21:10,501
where they can unleash
their unique breeding spectacle.
161
00:21:14,273 --> 00:21:18,342
This is where the antelopes'
leks will form--
162
00:21:18,377 --> 00:21:22,380
vast fighting arenas,
where gladiators duel,
163
00:21:22,414 --> 00:21:26,550
sometimes to the death,
for the right to mate.
164
00:21:31,323 --> 00:21:37,061
Their breeding season brief,
their hormonal rage intense,
165
00:21:37,095 --> 00:21:40,064
they are about to dispense
with ritual--
166
00:21:40,098 --> 00:21:43,267
and get straight
to the bloodletting.
167
00:21:51,977 --> 00:21:55,046
Head-butting males
are conspicuous icons
168
00:21:55,080 --> 00:21:57,782
of the need to breed.
169
00:22:02,220 --> 00:22:05,556
But in the hidden world
of the Costa Rican rainforest,
170
00:22:05,590 --> 00:22:08,092
it is a seething sisterhood
of hunger
171
00:22:08,126 --> 00:22:11,762
that assures the success
of the next generation.
172
00:22:14,366 --> 00:22:19,403
And unleashes one of the most feared
migrations on Earth.
173
00:22:24,443 --> 00:22:28,245
The army ants are on the move.
174
00:22:41,927 --> 00:22:45,129
The engine of
this merciless hunger--
175
00:22:45,163 --> 00:22:49,967
a brood of 200,000 larvae
and their caretakers,
176
00:22:50,001 --> 00:22:54,372
demanding 30,000 corpses a day.
177
00:23:00,278 --> 00:23:04,115
The nursery lies at the heart of
a twitching, throbbing structure
178
00:23:04,149 --> 00:23:08,219
built almost entirely
of the ants themselves.
179
00:23:09,354 --> 00:23:12,990
Long legs stuck together
with tarsal claws,
180
00:23:13,024 --> 00:23:17,261
they are the scaffolding,
bricks and mortar of the nest.
181
00:23:24,436 --> 00:23:27,538
But they've been in one place
for three weeks,
182
00:23:27,572 --> 00:23:32,143
ravaging the forest floor
for miles in all directions.
183
00:23:35,580 --> 00:23:37,982
lt's time to migrate.
184
00:23:49,561 --> 00:23:54,064
ln the darkness,
they pour out of the nest,
185
00:23:54,099 --> 00:23:58,569
porters carrying
the precious larvae.
186
00:23:58,603 --> 00:24:03,641
They are virtually all sisters,
daughters of one queen.
187
00:24:08,413 --> 00:24:12,249
They will migrate
about 330 feet each night--
188
00:24:12,284 --> 00:24:16,620
the equivalent in human terms
of a marathon.
189
00:24:21,326 --> 00:24:23,561
Deaf and virtually blind--
190
00:24:23,595 --> 00:24:26,030
they nonetheless
communicate brilliantly
191
00:24:26,064 --> 00:24:30,100
through touch and complicated
chemical signals.
192
00:24:34,105 --> 00:24:38,175
And now the message
goes out to bivouac.
193
00:24:41,513 --> 00:24:46,784
Almost magically, they form
a temporary nest of their own bodies.
194
00:24:50,755 --> 00:24:55,960
The larvae and food are taken
into the nursery at its center.
195
00:25:03,735 --> 00:25:07,371
Tomorrow they will do
the whole thing again--
196
00:25:07,405 --> 00:25:12,443
marching for two to three weeks
to reach fresh hunting grounds,
197
00:25:12,477 --> 00:25:14,812
where they can set up
another raiding base--
198
00:25:14,846 --> 00:25:18,215
and reach new heights
of slaughter.
199
00:25:24,289 --> 00:25:29,560
[birds calling]
200
00:25:42,741 --> 00:25:46,410
On migration central--
the Falkland lslands--
201
00:25:46,444 --> 00:25:49,880
the multitudes are busy multiplying.
202
00:25:55,754 --> 00:25:59,356
Female elephant seals
barely escape the males' attentions
203
00:25:59,391 --> 00:26:04,895
long enough to give birth
to pups conceived here last year.
204
00:26:12,170 --> 00:26:15,372
ln the brief three weeks
the pup has with his mother,
205
00:26:15,407 --> 00:26:17,975
his body weight will triple...
206
00:26:20,011 --> 00:26:23,380
as hers shrinks by a third.
207
00:26:36,061 --> 00:26:38,262
The bull moves in
soon after the birth
208
00:26:38,296 --> 00:26:41,465
to impregnate her again.
209
00:26:44,102 --> 00:26:46,337
Each beachmaster
on these shores
210
00:26:46,371 --> 00:26:49,139
may have dozens of females
in his harem--
211
00:26:49,174 --> 00:26:53,811
and 100 matings to complete--
in less than a month.
212
00:26:56,748 --> 00:27:02,052
All the while having to fight off
more and more challengers.
213
00:27:07,158 --> 00:27:10,260
Unable to leave his harem
to feed at sea,
214
00:27:10,295 --> 00:27:14,031
he's losing 50 pounds
of blubber a day.
215
00:27:20,538 --> 00:27:22,306
[rumbling]
216
00:27:25,577 --> 00:27:29,013
[albatrosses chattering]
217
00:27:34,119 --> 00:27:39,556
Already the albatross chicks
are hatching in staggering numbers,
218
00:27:39,591 --> 00:27:42,559
downy and demanding.
219
00:27:47,298 --> 00:27:50,234
With unending patience,
the new mother waits
220
00:27:50,268 --> 00:27:54,304
for her mate to return
from his foraging--
221
00:27:54,339 --> 00:27:57,975
until near starvation,
if she must.
222
00:28:03,348 --> 00:28:08,085
He, meanwhile, may be covering
thousands of miles on the wing,
223
00:28:08,119 --> 00:28:11,455
simply to find food for his brood.
224
00:28:18,163 --> 00:28:21,498
He returns, heavy with seafood.
225
00:28:28,506 --> 00:28:34,244
After a brief greeting, they transfer
parental responsibilities.
226
00:28:39,384 --> 00:28:42,019
He fills the chick's belly...
227
00:28:45,724 --> 00:28:48,492
and the family is content.
228
00:28:58,670 --> 00:29:01,505
But Johnny rook is hungry too.
229
00:29:04,342 --> 00:29:10,047
[chick chirping]
230
00:29:29,434 --> 00:29:33,170
Sometimes a parent
never returns from the sea.
231
00:29:35,907 --> 00:29:40,043
And the raptor executes
his cruel mercy.
232
00:30:24,088 --> 00:30:29,493
ln the roiling surf, rockhoppers
porpoise home with their gullets full.
233
00:30:32,897 --> 00:30:36,266
They take turns
shuttling to the sea daily,
234
00:30:36,301 --> 00:30:41,205
nabbing tidbits of krill
to feed their growing chicks.
235
00:31:02,560 --> 00:31:07,531
Once ashore, the rockhoppers
trade their long, graceful sea migrations
236
00:31:07,565 --> 00:31:11,368
for a daunting and
dangerous vertical one.
237
00:31:20,545 --> 00:31:23,714
They've made their nests
high on the sheer cliffs
238
00:31:23,748 --> 00:31:26,817
far from the freezing sea spray.
239
00:31:29,020 --> 00:31:31,855
And each day,
pudgy with baby food,
240
00:31:31,890 --> 00:31:36,360
they must scale these
unforgiving rock walls.
241
00:31:52,143 --> 00:31:58,048
Centuries of penguin passage
have left their mark--
242
00:31:58,082 --> 00:32:02,619
everywhere the cliffs
are scarred by penguin claws.
243
00:32:16,768 --> 00:32:21,204
They are irrepressible--
244
00:32:21,239 --> 00:32:26,276
and undaunted by missteps
and stumbles.
245
00:32:43,528 --> 00:32:48,332
At the top, red-eyed, yellow-browed
and full of spunk,
246
00:32:48,366 --> 00:32:51,535
they celebrate their ascent
and reunion...
247
00:32:51,569 --> 00:32:56,440
[braying]
248
00:32:56,474 --> 00:33:00,277
and are quickly assaulted
by their ravenous chicks,
249
00:33:00,311 --> 00:33:03,380
now nearly as big as the adults.
250
00:33:03,414 --> 00:33:06,116
[chick shrieking]
251
00:33:06,150 --> 00:33:08,819
"More food" is the chorus
ringing out
252
00:33:08,853 --> 00:33:13,557
up and down the shores and cliffs
of the Falklands.
253
00:33:19,897 --> 00:33:21,732
Migrants who spend their lives
254
00:33:21,766 --> 00:33:25,736
gracefully plying hundreds of miles
of sea and air,
255
00:33:25,770 --> 00:33:27,404
feeding at their leisure,
256
00:33:27,438 --> 00:33:32,943
are now bound to these frozen shards
of rock and sand--
257
00:33:32,977 --> 00:33:35,846
battered by the calls
of their young:
258
00:33:40,351 --> 00:33:41,685
More food.
259
00:33:41,719 --> 00:33:43,553
[pup barking]
260
00:34:01,305 --> 00:34:04,107
lt's nightfall in Australia.
261
00:34:05,943 --> 00:34:08,678
Rush hour is in full swing.
262
00:34:12,750 --> 00:34:15,619
The little red flying foxes
are migrating--
263
00:34:15,653 --> 00:34:18,021
and parched with thirst.
264
00:34:22,126 --> 00:34:27,197
But a drink on the wing
is a dangerous undertaking...
265
00:34:27,231 --> 00:34:30,467
especially for
the inexperienced young.
266
00:34:43,147 --> 00:34:47,884
Some freshwater crocs
try to snap them out of the air.
267
00:34:57,095 --> 00:35:00,564
Others wait for fatal mistakes.
268
00:35:14,979 --> 00:35:18,081
But many more make it through...
269
00:35:18,116 --> 00:35:24,421
and after many hours on the wing,
they find their new paradise.
270
00:35:24,455 --> 00:35:30,093
Fresh, succulent eucalyptus
at the height of its bloom.
271
00:35:42,073 --> 00:35:47,010
At dawn, they select
a camp nearby--
272
00:35:47,044 --> 00:35:50,814
their new base
for feeding excursions.
273
00:35:56,754 --> 00:35:58,522
lt's time to get down
to the business
274
00:35:58,556 --> 00:36:02,692
of creating the next generation
of flying nomads.
275
00:36:05,796 --> 00:36:08,698
Males spar for territory.
276
00:36:09,834 --> 00:36:13,236
They may have harems
of up to five females,
277
00:36:13,271 --> 00:36:15,972
although the little reds
are so little studied,
278
00:36:16,007 --> 00:36:18,508
no one knows for sure.
279
00:36:22,113 --> 00:36:27,117
Courtship involves a great deal
of nuzzling and stroking.
280
00:36:30,454 --> 00:36:33,557
The act itself is brief.
281
00:36:35,226 --> 00:36:39,729
But the couple sometimes
clings to each other for hours.
282
00:36:51,409 --> 00:36:52,642
After a long day,
283
00:36:52,677 --> 00:36:56,413
they wrap themselves
in their elegant capes,
284
00:36:56,447 --> 00:36:59,216
trying to catch a nap.
285
00:37:13,931 --> 00:37:18,969
Tonight, the newly weaned young
will join the feeding frenzy.
286
00:37:22,340 --> 00:37:26,943
They are now fully fledged
members of the colony,
287
00:37:26,978 --> 00:37:31,681
ready to investigate
the bounty of this land--
288
00:37:31,716 --> 00:37:36,987
and darken the dusk with
breathtaking numbers once again.
289
00:38:42,119 --> 00:38:49,059
Morning in Costa Rica, and the army
is on the move again.
290
00:38:52,029 --> 00:38:57,500
Each day, about a third of the nest
spills out in a deluge of ants.
291
00:39:14,719 --> 00:39:19,422
And for most of their prey,
resistance is futile.
292
00:40:01,198 --> 00:40:04,401
Even fearsome wasps
high in treetops
293
00:40:04,435 --> 00:40:07,971
are no match
for the implacable ants.
294
00:40:24,955 --> 00:40:27,657
They watch helplessly
as their own larvae
295
00:40:27,691 --> 00:40:31,094
are stripped from
their honeycomb cribs.
296
00:40:39,904 --> 00:40:44,707
Now the porters
take up their burdens
297
00:40:44,742 --> 00:40:49,112
and carry the moveable feast
back to the unquenchable young.
298
00:40:52,283 --> 00:40:55,919
Generations of ants
will come and go.
299
00:41:00,357 --> 00:41:05,395
But the restless hunger
of their sisterhood will be immortal.
300
00:41:46,504 --> 00:41:48,671
On the savannahs
of the Sudan,
301
00:41:48,706 --> 00:41:52,675
the clash of males
is reaching a fever pitch.
302
00:42:04,755 --> 00:42:09,859
A male kob's life
boils down to this:
303
00:42:09,894 --> 00:42:16,165
here and now, kob on kob,
pound for pound.
304
00:42:45,996 --> 00:42:50,066
The bodies of the fallen
litter the battlefield.
305
00:43:04,748 --> 00:43:08,651
The females approach
the victorious males warily...
306
00:43:10,020 --> 00:43:13,289
and with a discerning eye.
307
00:43:14,925 --> 00:43:17,827
They gravitate
to the eye of the storm,
308
00:43:17,861 --> 00:43:20,296
knowing that only
the fittest gladiators
309
00:43:20,331 --> 00:43:24,434
can make a stand at the middle
of the deadly arena.
310
00:43:35,179 --> 00:43:40,116
And a chemically choreographed
dance of mutual seduction begins.
311
00:43:43,687 --> 00:43:49,125
The kob's love letters--
hormone-laden urine.
312
00:43:56,200 --> 00:43:59,535
He soaks the soil with his brew.
313
00:44:01,939 --> 00:44:05,041
The smell may be packed
with complex information
314
00:44:05,075 --> 00:44:08,711
about his genetic
and physical fitness.
315
00:44:16,153 --> 00:44:22,392
Suitably pleased, she answers
with her own stream of urine.
316
00:44:22,426 --> 00:44:25,928
His clownish expression
is known as flehmen:
317
00:44:25,963 --> 00:44:27,563
he's filtering the scent
318
00:44:27,598 --> 00:44:32,301
through a complex set of receptors
in the roof of his mouth.
319
00:44:41,845 --> 00:44:47,183
There's no mistaking it:
she's ready to mate.
320
00:44:54,024 --> 00:44:59,262
Finally, the lovers unite...
albeit, briefly.
321
00:45:09,206 --> 00:45:13,209
After two months,
the breeding season is over.
322
00:45:15,212 --> 00:45:19,515
lt's time for the long trek back
to their southern feeding grounds,
323
00:45:19,550 --> 00:45:24,754
with the females carrying
the next generation of nomads--
324
00:45:24,788 --> 00:45:27,056
and fighters.
325
00:45:38,635 --> 00:45:41,971
ln the Falklands, too,
the mammoth gladiators
326
00:45:42,005 --> 00:45:46,375
are turning away
from their battlefields...
327
00:45:46,410 --> 00:45:50,713
and a spectacular exodus
must now begin.
328
00:45:59,890 --> 00:46:03,192
For the young on these
bleak southern shores,
329
00:46:03,227 --> 00:46:06,295
it is the season
of abandonment.
330
00:46:12,069 --> 00:46:17,206
With barely a backwards glance,
the starving elephant seal females
331
00:46:17,241 --> 00:46:21,711
desert their giant three-week-old babies
on the shore.
332
00:46:30,320 --> 00:46:35,691
The males, utterly spent, have
nothing to do with their young.
333
00:46:42,733 --> 00:46:44,066
With this abrupt weaning,
334
00:46:44,101 --> 00:46:48,838
the pups make their first forays
into the shallows.
335
00:46:48,872 --> 00:46:54,644
They, too, will return to these shores
after thousand-mile journeys.
336
00:47:02,653 --> 00:47:08,157
The rockhopper parents
also take leave of their young--
337
00:47:08,192 --> 00:47:09,926
heading back into the water
338
00:47:09,960 --> 00:47:13,930
with the joy of a creature
returning to its element.
339
00:47:23,907 --> 00:47:29,078
After months on awkward shores,
they're going home.
340
00:47:39,089 --> 00:47:43,292
The young albatross fledglings,
left behind days ago,
341
00:47:43,327 --> 00:47:46,195
rev their engines on their nests,
342
00:47:46,230 --> 00:47:49,398
testing the four-foot wings
and howling winds
343
00:47:49,433 --> 00:47:52,568
that will power them
around the world.
344
00:48:02,012 --> 00:48:03,846
lt's time--
345
00:48:03,881 --> 00:48:07,383
to fly...or die.
346
00:48:25,702 --> 00:48:31,374
For Johnny rook, the casualties
are merely a last chance to feast.
347
00:48:31,408 --> 00:48:35,378
[Johnny rook squawking]
348
00:48:37,281 --> 00:48:39,382
Soon there will be
little left but scraps
349
00:48:39,416 --> 00:48:43,119
to sustain him
through a brutal winter.
350
00:48:52,663 --> 00:48:56,766
The last fledglings now
make a leap of faith.
351
00:49:05,475 --> 00:49:10,546
Once on the wing, they may not
come to shore for a decade...
352
00:49:13,083 --> 00:49:16,252
and then, only to breed.
353
00:49:24,194 --> 00:49:29,632
From now on, they are migrants,
354
00:49:29,666 --> 00:49:32,601
circling the southern world...
355
00:49:35,672 --> 00:49:38,841
wedded to brilliant skies...
356
00:49:41,278 --> 00:49:45,715
and slipping the surly bonds
of Earth.
29159
Can't find what you're looking for?
Get subtitles in any language from opensubtitles.com, and translate them here.