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(BIRDS CHIRPING)
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NARRATOR:
In America's temperate Northwest...
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00:00:17,880 --> 00:00:19,920
...shrouded by forests...
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...and encircled by high peaks...
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...lies a tidal arena of
glacial streams,
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00:00:31,760 --> 00:00:34,080
salt marshes
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and shorelines.
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00:00:38,680 --> 00:00:40,520
The animals that survive here
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are hardened to the elements.
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Half-tonne predators...
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...fierce aerial fighters...
(EAGLES SCREECHING)
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...and small, but mighty hunters.
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00:00:55,120 --> 00:00:58,040
They are resourceful opportunists,
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00:00:58,040 --> 00:01:01,880
adapted to endure
this wintery wilderness,
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00:01:01,880 --> 00:01:03,720
and, when spring arrives...
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...they go into overdrive.
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(GROWLING)
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They fight to rule the sky...
(EAGLES SCREECHING)
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...and wrestle
to assert their dominance.
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(ROARING)
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and use their cunning
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to capitalize on a narrow window
of available food.
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Opportunities are fleeting.
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(GROWLING)
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So, as the clock runs down
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on this time of plenty,
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it's do...
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...or die.
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(DRAMATIC MUSIC)
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After six months of brutal cold...
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...America's Northwest coast
is bathed in warm, spring sun.
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It's awoken one of
the elders of this arena.
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(BEAR HUFFS)
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Brown Bear.
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He survived the winter,
hibernating in his mountain den.
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He made the journey down
into the tidelands a week ago...
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...and his metabolism is ramping up.
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Over winter, he lost
a third of his body weight.
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He's starving...
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...and he's on a mission to feed.
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He needs to make the most
of these warmer months,
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and bulk up
before the cold returns.
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(CRUNCHING)
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The best food for him,
after his long hibernation,
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is sedge grass.
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It's packed with protein.
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So, this lush meadow
is his lifeline.
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But the grass is just an appetizer.
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Later in the season,
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the stream running through it
will be teeming with salmon.
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(GRUNTING)
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(CRUNCHING GRASS)
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But keeping this feeding
spot for himself...
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...won't be straightforward.
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Other bears are waking
from their sleep...
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...all looking for a place to feed.
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(TENSE MUSIC)
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This time of year
isn't just about eating.
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It's the time to
reestablish hierarchy
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for the rest of the season.
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A large male is heading for
Brown Bear's patch.
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(TENSE MUSIC CONTINUES)
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Brown Bear must eat
14 kilos of grass each day,
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to gain the weight he needs.
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Fighting, when
he's this low on energy,
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isn't the smart thing to do.
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00:05:02,520 --> 00:05:04,080
(INTRUDER GROWLING)
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He recognizes the outsider's scent,
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a male he's encountered before.
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Brown Bear has learned to read
the subtle posture changes,
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that can reveal a rival's hand.
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(INTRUDER GROWLS SOFTLY)
And he knows...
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...his opponent, is agitated.
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(OMINOUS MUSIC)
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(GROWLING)
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Brown Bear tries to settle him
with a stern paw.
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An all-out brawl could see
both bears getting gravely injured.
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He turns his body side on,
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signalling that
he's not looking for a fight.
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00:06:13,080 --> 00:06:15,560
But the outsider wants to escalate.
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(INTRUDER ROARS)
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He senses an opportunity to
advance up the social hierarchy.
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(BOTH ROARING)
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He grapples Brown Bear
with his claws and teeth,
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a clear attempt
to establish dominance.
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His loose pelt makes it hard
for the challenger to keep hold him.
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He lands a bite on Brown Bear's ear,
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with enough force
to crack a bowling ball.
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(ROARING)
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(ROARING CONTINUES)
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00:07:01,160 --> 00:07:03,600
It's too much
for Brown Bear to take.
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00:07:07,680 --> 00:07:09,400
Experience tells him,
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that he doesn't need to meet
every dominance battle head on.
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Risking injury so early
in the season, isn't smart.
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So, he backs away... for now.
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(BROWN BEAR PANTING)
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(BROWN BEAR HUFFS)
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Brown Bear has to concede
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a prime spot
in this riverside meadow.
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He must now use
his wisdom and experience
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to stake his claim on
a new feeding spot elsewhere.
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(TRANQUIL MUSIC)
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As the spring sun
warms this arena...
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...creatures of all kinds
are emerging...
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...to cash in
on the improving conditions.
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(CHIRPING)
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Soaring over them all...
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...Bald Eagle.
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She spent the winter
further south...
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...where the lakes remained ice-free.
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00:08:38,240 --> 00:08:42,120
Now she's back to make the most
of the spring weather,
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00:08:42,120 --> 00:08:45,120
that, each year, turns this bay
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into a rich fishing territory.
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(BIRDS CHIRPING)
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For the past twelve seasons,
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she's successfully
staked her claim here.
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Her four-square-kilometre territory
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is not just important for food...
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...but also...
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...for continuing her bloodline.
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(CHICKS CHEEPING)
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Sitting 50 metres up
in a Douglas fir...
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(LOUD CHIRPING)
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...is the large nest she first built
with her lifelong partner
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00:09:33,840 --> 00:09:35,480
over a decade ago.
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Each year, the pair return
to raise a new brood of chicks.
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And this year's eight-week-old
youngster, is growing fast.
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With an extra mouth to feed,
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00:09:52,000 --> 00:09:56,040
protecting her territory
is of the utmost importance.
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00:09:58,600 --> 00:10:02,440
And this season,
an invader has arrived early.
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(OMINOUS MUSIC)
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A juvenile bald eagle...
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...probing the area
to see if she can fish here.
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00:10:18,920 --> 00:10:23,160
This confident outsider,
is clearly trying its luck.
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00:10:24,840 --> 00:10:26,240
(SCREECHING ECHOES)
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00:10:26,240 --> 00:10:31,000
Bald Eagle's high-pitched
territorial call is her war cry.
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00:10:31,000 --> 00:10:35,960
It reverberates across the bay,
warning the intruder.
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00:10:39,480 --> 00:10:41,440
But the youngster isn't deterred.
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(TENSE MUSIC)
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00:10:51,240 --> 00:10:55,360
Bald Eagle's 7,000 feathers
work in unison,
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producing maximum lift
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with flawless aerial control.
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(SCREECHES)
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00:11:03,160 --> 00:11:05,720
The juvenile's
wing and tail feathers,
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are longer than an adult's.
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00:11:08,960 --> 00:11:11,440
They're better suited
for slow soaring.
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00:11:11,440 --> 00:11:12,600
(SCREECHES)
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00:11:13,520 --> 00:11:17,480
But Bald Eagle's shorter feathers
produce less resistance,
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00:11:17,480 --> 00:11:19,520
allowing her to flap faster
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00:11:19,520 --> 00:11:21,360
and fly with greater speed.
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00:11:23,760 --> 00:11:25,560
(SCREECHING)
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00:11:35,120 --> 00:11:37,640
Using its tail as an airbrake,
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the juvenile wheels around
to get behind her.
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00:11:52,200 --> 00:11:53,800
To minimize drag,
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00:11:53,800 --> 00:11:57,040
the juvenile spreads
its wing tips wide
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then turns for the attack.
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00:12:03,440 --> 00:12:05,240
(SCREECHING)
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00:12:09,400 --> 00:12:12,120
Bald Eagle splays her taloned feet
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00:12:12,120 --> 00:12:13,760
to lock onto the youngster.
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By folding back her wings,
she forces it downwards.
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(SCREECHING)
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00:12:30,080 --> 00:12:32,480
The juvenile's feathers
aren't waterproof.
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A sitting duck.
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00:12:35,680 --> 00:12:37,960
(TENSE, OMINOUS MUSIC)
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Bald Eagle drops
into a highspeed dive...
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...and goes for the strike.
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She aims eight needle-sharp
talons at her target.
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The juvenile twists
to avoid being impaled...
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...and only narrowly escapes injury.
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The juvenile gets escorted
out of the bay...
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...leaving Bald Eagle in peace...
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...to secure her next meal.
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00:13:32,400 --> 00:13:37,120
The price for presiding over
this prime fishing spot
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00:13:37,120 --> 00:13:40,280
is a daily battle
against opportunists.
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00:13:49,000 --> 00:13:51,640
As spring progresses,
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competition will only
get more intense.
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00:14:00,800 --> 00:14:04,760
The tidelands are about to undergo
a dramatic transformation...
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...inviting a host of new opponents
into this arena.
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00:14:18,960 --> 00:14:23,200
At high tide,
deep water covers the tidal flats.
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00:14:27,520 --> 00:14:29,120
Below the waterline...
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...new arrivals are moving in.
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This is a toadfish.
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00:14:40,080 --> 00:14:42,040
Each year, the spring conditions
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00:14:42,040 --> 00:14:45,000
lure millions of them
to spawn along the coast.
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00:14:48,600 --> 00:14:52,800
Right now, the toadfish
is safely hidden underwater.
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00:14:59,480 --> 00:15:02,120
But in the coming days,
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00:15:02,120 --> 00:15:06,080
this shore will undergo
a dramatic change...
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...exposing a seafood feast...
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...that will attract
predators of all kinds.
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Bald Eagle must be ready to fight.
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While the fate of the animals
above the waterline
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hangs in the balance...
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...in the freshwater stream
that feeds the estuary...
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...there's another small,
but deadly creature
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preparing for a battle of its own.
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Dragonfly nymph.
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00:15:53,200 --> 00:15:56,760
A five-centimetre-long,
aquatic hunter.
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00:16:01,120 --> 00:16:04,480
She survived the winter
by burying herself in the sediment.
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00:16:09,280 --> 00:16:13,040
By entering a state of
suspended animation,
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00:16:13,040 --> 00:16:16,240
she was able to withstand
the freezing temperatures.
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00:16:17,520 --> 00:16:19,320
But now she's out,
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she's ready to feed.
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00:16:31,880 --> 00:16:33,920
Her strategy?
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00:16:33,920 --> 00:16:35,760
The ambush.
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00:16:38,840 --> 00:16:42,880
Each of her huge eyes is
made of 30,000 parts.
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00:16:44,480 --> 00:16:48,880
80% of her brain is
dedicated to processing vision...
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00:16:50,560 --> 00:16:54,600
...giving her a 360-degree
view of her world.
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00:16:58,840 --> 00:17:00,760
(TENSE, OMINOUS MUSIC)
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00:17:12,680 --> 00:17:14,800
She strikes her prey
with her pincers
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00:17:14,800 --> 00:17:17,400
in ten milliseconds,
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00:17:17,400 --> 00:17:19,560
and drags it towards her mouth.
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00:17:23,600 --> 00:17:25,040
(CRACKLING SOUND)
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00:17:27,800 --> 00:17:31,560
This beetle releases
a foultasting chemical.
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00:17:34,040 --> 00:17:37,000
Nymph opts to find
a more palatable meal.
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00:17:42,640 --> 00:17:46,160
Luckily, the spring conditions
have delivered
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00:17:46,160 --> 00:17:48,640
a bounty of newly-hatched fish.
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00:18:07,560 --> 00:18:09,360
(OMINOUS MUSIC)
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00:18:15,880 --> 00:18:18,840
The powerful grasp
of Nymph's serrated jaws
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00:18:18,840 --> 00:18:21,520
makes it impossible
for the fish to shake free.
220
00:18:34,520 --> 00:18:39,080
Only the most powerful of insects
can hunt vertebrates.
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00:18:44,800 --> 00:18:47,360
Her paired mouth parts
grind together
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00:18:47,360 --> 00:18:49,720
to slice through
the flesh and bone.
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00:18:52,600 --> 00:18:54,560
(CRUNCHING)
224
00:19:05,680 --> 00:19:07,800
She cleans her weaponry,
225
00:19:07,800 --> 00:19:09,680
ready for the next meal.
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00:19:13,880 --> 00:19:16,800
She must make the most
of the springtime riches...
227
00:19:18,320 --> 00:19:22,360
...because this year
is Nymph's most critical yet.
228
00:19:27,400 --> 00:19:30,960
She's lived in this stream
for four years,
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00:19:30,960 --> 00:19:33,240
and if she can make it to summer,
230
00:19:33,240 --> 00:19:35,000
she'll shed her skin
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00:19:35,000 --> 00:19:39,080
and emerge into a fully-winged
adult dragonfly.
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00:19:40,800 --> 00:19:43,960
But to survive,
she must be on her guard...
233
00:19:45,160 --> 00:19:48,400
...ready to take on an age-old foe.
234
00:19:57,520 --> 00:19:59,440
Surviving the tidelands
235
00:19:59,440 --> 00:20:02,720
isn't just about powerful jaws
and brute strength.
236
00:20:06,920 --> 00:20:09,600
Great Blue Heron's tactic
237
00:20:09,600 --> 00:20:12,320
is to slip beneath the radar.
238
00:20:12,320 --> 00:20:14,160
(SUSPENSEFUL MUSIC)
239
00:20:15,640 --> 00:20:19,560
He's a one- metre-tall sneak thief,
240
00:20:19,560 --> 00:20:22,160
creeping on stilt-like legs,
241
00:20:22,160 --> 00:20:25,080
scanning the landscape
242
00:20:25,080 --> 00:20:27,280
with his powerful, binocular vision.
243
00:20:36,320 --> 00:20:39,720
90 percent of his waking time
is spent hunting.
244
00:20:49,680 --> 00:20:52,960
In the still water,
he moves meticulously,
245
00:20:52,960 --> 00:20:54,920
without a ripple.
246
00:20:57,080 --> 00:21:00,200
He then waits, motionless,
247
00:21:00,200 --> 00:21:02,400
for any prey to wander close.
248
00:21:10,520 --> 00:21:14,280
The fish in these slow-moving
streams are just small fry.
249
00:21:17,200 --> 00:21:21,000
Soon, a rare tide
will offer up a bigger prize.
250
00:21:24,920 --> 00:21:26,920
The only snag?
251
00:21:26,920 --> 00:21:30,040
That fishing spot
is closely guarded.
252
00:21:32,320 --> 00:21:34,320
(TENSE, OMINOUS MUSIC)
253
00:21:37,640 --> 00:21:39,720
Bald Eagle's territory.
254
00:21:44,600 --> 00:21:47,360
Poaching fish
from a territorial raptor,
255
00:21:47,360 --> 00:21:49,760
will be a high-stakes game.
256
00:21:51,440 --> 00:21:53,240
(EAGLE SCREECHES)
257
00:22:03,080 --> 00:22:05,880
Finally, the moment has come.
258
00:22:08,120 --> 00:22:11,360
The tidelands begin
their dramatic transformation.
259
00:22:11,360 --> 00:22:13,000
(SUSPENSEFUL MUSIC)
260
00:22:13,880 --> 00:22:16,240
As water drains from the estuary,
261
00:22:16,240 --> 00:22:18,320
the tide starts to fall.
262
00:22:21,080 --> 00:22:25,440
But a few times a year,
the tides here get supercharged.
263
00:22:29,800 --> 00:22:32,720
When a full or new moon
passes close to Earth...
264
00:22:33,720 --> 00:22:36,200
...its gravitational pull
is amplified.
265
00:22:38,240 --> 00:22:40,200
The perigean spring tide.
266
00:22:44,040 --> 00:22:47,040
The water level drops
many metres below normal...
267
00:22:49,040 --> 00:22:53,680
...exposing a one-and-a-half
kilometre stretch of oyster beds.
268
00:23:03,520 --> 00:23:05,720
Thousands of toadfish
269
00:23:05,720 --> 00:23:08,040
are stranded and exposed
270
00:23:08,040 --> 00:23:11,360
across this vast, tidal expanse.
271
00:23:23,520 --> 00:23:25,360
(SUSPENSEFUL MUSIC)
272
00:23:25,360 --> 00:23:27,800
From the forests behind the beach...
273
00:23:31,280 --> 00:23:34,800
...Heron makes his advance
towards the oyster beds.
274
00:23:41,640 --> 00:23:44,160
Bald Eagle's long-distance vision
275
00:23:44,160 --> 00:23:46,440
is eight times better than ours.
276
00:23:49,080 --> 00:23:52,280
She could spot a rabbit
at three kilometres.
277
00:23:54,280 --> 00:23:57,160
If Heron is spotted
in her territory,
278
00:23:57,160 --> 00:23:59,760
he could be attacked,
even killed.
279
00:24:02,800 --> 00:24:06,720
He pauses to scan the exposed
tidal flat for dangers.
280
00:24:11,600 --> 00:24:14,840
These extreme low tides
will only last a few days.
281
00:24:16,200 --> 00:24:18,800
To capitalize on
the optimum fishing window,
282
00:24:18,800 --> 00:24:20,640
he needs to move now.
283
00:24:22,360 --> 00:24:23,960
(SUSPENSEFUL MUSIC)
284
00:24:33,520 --> 00:24:35,480
(MUSIC INTENSIFIES)
285
00:24:36,640 --> 00:24:39,360
The exposed oysters are razor sharp.
286
00:24:42,800 --> 00:24:46,000
But Heron's long toes
act like snowshoes,
287
00:24:46,000 --> 00:24:47,680
spreading his weight.
288
00:24:57,920 --> 00:25:00,880
His large eyes
have a built-in zoom lens.
289
00:25:03,280 --> 00:25:06,880
He switches between
telescopic and closeup vision
290
00:25:06,880 --> 00:25:09,520
to find the fish
caught in the tidal pools.
291
00:25:19,880 --> 00:25:21,680
A meaty toadfish.
292
00:25:25,520 --> 00:25:29,640
To defend itself,
it extends its spiky dorsal fin.
293
00:25:36,400 --> 00:25:39,160
So Heron uses his beak as a spear,
294
00:25:39,160 --> 00:25:41,000
to sever its spinal cord.
295
00:25:47,520 --> 00:25:49,760
The activity hasn't gone unnoticed.
296
00:25:50,880 --> 00:25:52,760
With her nest nearby,
297
00:25:52,760 --> 00:25:56,720
Bald Eagle has a zero-tolerance,
no-fishing policy.
298
00:25:59,000 --> 00:26:01,080
But Heron is just getting started.
299
00:26:02,000 --> 00:26:06,240
His large stomach can expand
to hold half his bodyweight in fish.
300
00:26:08,680 --> 00:26:10,080
(EAGLE SCREECHES)
301
00:26:11,760 --> 00:26:14,800
Bald Eagle's counter strike
kicks into gear.
302
00:26:14,800 --> 00:26:16,440
(TENSE MUSIC)
303
00:26:16,440 --> 00:26:18,920
Soaring 100 metres above the bay...
304
00:26:21,120 --> 00:26:23,520
...her keen eyesight
allows her to calculate
305
00:26:23,520 --> 00:26:25,360
her exact angle of attack.
306
00:26:34,160 --> 00:26:36,440
She tucks her wing
and dives at a speed
307
00:26:36,440 --> 00:26:39,240
close to 160 kilometres an hour.
308
00:26:41,840 --> 00:26:43,560
(HIGH-PITCHED CAWING)
309
00:26:47,720 --> 00:26:50,720
Only now, does Heron
clock the incoming attack.
310
00:26:54,880 --> 00:26:56,960
There's no time
to swallow his catch.
311
00:26:59,160 --> 00:27:01,160
(TENSE MUSIC CONTINUES)
312
00:27:04,280 --> 00:27:05,280
(HERON SQUAWKS)
313
00:27:06,400 --> 00:27:10,080
He throws his wings wide
and wields his sharp beak.
314
00:27:10,080 --> 00:27:11,520
(HERON SQUAWKS)
315
00:27:12,400 --> 00:27:14,240
Eagle twists to dodge it
316
00:27:14,240 --> 00:27:16,680
and delivers
a devastating body slam.
317
00:27:23,320 --> 00:27:25,720
Heron recovers
to reclaim his fish...
318
00:27:26,760 --> 00:27:28,480
...and a mouthful of seaweed.
319
00:27:29,720 --> 00:27:32,440
Bald Eagle is three times
faster than Heron.
320
00:27:33,960 --> 00:27:35,560
But Heron is lightweight,
321
00:27:35,560 --> 00:27:37,640
with superior endurance.
322
00:27:40,360 --> 00:27:42,360
With his two-metre wingspan,
323
00:27:42,360 --> 00:27:45,080
he banks steeply,
dodging the attack.
324
00:27:46,200 --> 00:27:47,800
(DRAMATIC MUSIC)
325
00:27:52,360 --> 00:27:55,440
Heron's heavy payload of fish
is slowing him down.
326
00:28:14,360 --> 00:28:17,320
He can no longer keep hold
of his pirated meal.
327
00:28:42,240 --> 00:28:45,000
Heron flees to
the outer fringes of the bay...
328
00:28:54,480 --> 00:28:57,120
...but Bald Eagle's problems
are just beginning.
329
00:28:58,920 --> 00:29:02,840
The extreme low tides have drawn
all comers from across the region.
330
00:29:04,680 --> 00:29:06,480
(HIGH-PITCHED CAWING)
331
00:29:07,800 --> 00:29:13,120
Adults and juvenile eagles from
many kilometres away are arriving,
332
00:29:13,120 --> 00:29:14,680
hoping to fish here.
333
00:29:22,120 --> 00:29:23,920
(EAGLE SCREECHING)
334
00:29:28,760 --> 00:29:32,280
And more great blue herons
are arriving, too.
335
00:29:46,680 --> 00:29:49,120
Her territory has become overrun.
336
00:30:01,480 --> 00:30:04,800
And the outsider eagles are trying
to assert their dominance
337
00:30:04,800 --> 00:30:06,840
at this lowtide feast.
(EAGLES SCREECHING)
338
00:30:08,320 --> 00:30:09,720
(SCREECHES)
339
00:30:15,600 --> 00:30:17,400
(HIGH-PITCHED CAWING)
340
00:30:20,720 --> 00:30:22,680
(TENSE MUSIC)
341
00:30:29,280 --> 00:30:32,320
(HIGH-PITCHED CAWING)
With her nest nearby,
342
00:30:32,320 --> 00:30:35,520
Bald Eagle doesn't take kindly
to trespassers.
343
00:30:37,560 --> 00:30:39,480
To reassert her rule,
344
00:30:39,480 --> 00:30:42,080
she must deliver
a powerful show of strength.
345
00:30:43,960 --> 00:30:48,640
She fixes her sights on a
large adult female with a beakful.
346
00:30:54,520 --> 00:30:56,480
(DRAMATIC MUSIC)
347
00:31:03,360 --> 00:31:05,920
Her target takes flight
with the spoils...
348
00:31:08,880 --> 00:31:10,320
(HIGH-PITCHED CAWING)
349
00:31:10,320 --> 00:31:13,480
...but Bald Eagle
can't let her get away.
350
00:31:15,200 --> 00:31:17,600
The rival skillfully
guards her catch
351
00:31:17,600 --> 00:31:19,680
with a mid-air barrel roll.
352
00:31:33,360 --> 00:31:36,840
Bald Eagle picks her moment
and goes all in...
353
00:31:38,400 --> 00:31:40,920
...sending her opponent into a spin,
354
00:31:40,920 --> 00:31:42,760
forcing it to drop the meal.
355
00:31:49,200 --> 00:31:52,000
But the rival has travelled
hundreds of kilometres
356
00:31:52,000 --> 00:31:54,640
for the chance to fish
in this prime territory.
357
00:31:55,440 --> 00:31:57,120
She's prepared to fight.
358
00:32:01,080 --> 00:32:03,840
Bald Eagle locks onto her,
359
00:32:03,840 --> 00:32:05,480
dragging her to the ground.
360
00:32:05,480 --> 00:32:06,760
(HIGH-PITCHED CAWING)
361
00:32:13,640 --> 00:32:17,320
Then, she circles back,
and rushes the rival.
362
00:32:17,320 --> 00:32:18,840
(EAGLES SCREECHING)
363
00:32:20,760 --> 00:32:23,320
Bearing her powerful,
crushing talons...
364
00:32:26,320 --> 00:32:29,920
...the challenger
is outmaneuvered and outdone.
365
00:32:35,480 --> 00:32:36,880
She flees.
366
00:32:41,360 --> 00:32:43,560
While the eagles
have been squabbling...
367
00:32:44,960 --> 00:32:46,880
(BIRDS CAWING)
368
00:32:48,400 --> 00:32:51,160
...the bay has descended into chaos.
369
00:32:56,560 --> 00:32:58,200
(BIRDS CAWING)
370
00:33:04,960 --> 00:33:06,160
(CAWS)
371
00:33:09,680 --> 00:33:13,280
And a familiar foe
is taking full advantage.
372
00:33:15,480 --> 00:33:16,880
Heron.
373
00:33:20,680 --> 00:33:24,280
He's caught enough toadfish
to sustain him for days.
374
00:33:27,360 --> 00:33:29,600
Stuffed with a kilo of food...
375
00:33:33,160 --> 00:33:35,880
...he returns
to the cover of the forests.
376
00:33:40,480 --> 00:33:42,040
(HIGH-PITCHED CAWING)
377
00:33:42,040 --> 00:33:44,240
Only when the tide turns,
378
00:33:44,240 --> 00:33:47,440
will calm return
to Bald Eagle's beach.
379
00:33:47,440 --> 00:33:49,560
(HIGH-PITCHED CAWING)
380
00:34:00,440 --> 00:34:02,640
Along the coast,
381
00:34:02,640 --> 00:34:06,760
Brown Bear is working the
extreme low tide to his advantage.
382
00:34:06,760 --> 00:34:08,400
(BEAR HUFFING)
383
00:34:11,720 --> 00:34:13,880
Following his nose,
384
00:34:13,880 --> 00:34:15,720
he locates a hidden treasure.
385
00:34:25,440 --> 00:34:27,320
Clams.
386
00:34:27,320 --> 00:34:30,680
Brown Bear's
ten-centimetre-long hooked claws
387
00:34:30,680 --> 00:34:32,680
aren't just for fighting.
388
00:34:32,680 --> 00:34:34,200
They're tin openers.
389
00:34:39,840 --> 00:34:43,080
It's a skill that only the
smartest bears have mastered.
390
00:34:56,200 --> 00:34:59,360
Brown Bear shucks enough
to take the edge off his hunger.
391
00:35:06,800 --> 00:35:09,840
But clams are
a labour-intensive food.
392
00:35:15,440 --> 00:35:17,960
And a more enticing smell
is in the air.
393
00:35:17,960 --> 00:35:19,600
(SNIFFING)
394
00:35:25,160 --> 00:35:27,560
With his face to the wind,
395
00:35:27,560 --> 00:35:29,680
Brown Bear follows his nose.
396
00:35:31,200 --> 00:35:32,800
(SNIFFING, HUFFING)
397
00:35:33,920 --> 00:35:36,640
His sense of smell is
seven times more sensitive
398
00:35:36,640 --> 00:35:38,160
than a bloodhound's.
399
00:35:38,160 --> 00:35:39,680
(SNIFFING)
400
00:35:47,160 --> 00:35:50,760
The part of his brain
that identifies smells,
401
00:35:50,760 --> 00:35:53,520
is five times bigger
than a human's.
402
00:35:58,480 --> 00:36:01,440
And now, it's picked up
the trail of something
403
00:36:01,440 --> 00:36:03,400
that could be
the find of the season.
404
00:36:13,960 --> 00:36:15,800
(BIRDS CHIRPING)
405
00:36:25,360 --> 00:36:27,560
In the stream above the estuary...
406
00:36:29,720 --> 00:36:31,920
...Dragonfly Nymph is edging closer
407
00:36:31,920 --> 00:36:33,800
to the day she can fly away.
408
00:36:40,360 --> 00:36:42,320
But in this arena,
409
00:36:42,320 --> 00:36:43,920
nothing is guaranteed.
410
00:36:45,600 --> 00:36:47,200
(MENACING MUSIC)
411
00:36:49,800 --> 00:36:53,080
Lurking in the weeds,
another monster.
412
00:36:57,160 --> 00:36:58,960
Giant Waterbug.
413
00:37:00,720 --> 00:37:02,760
At six centimetres long,
414
00:37:02,760 --> 00:37:05,840
he's one of the largest
aquatic insects on Earth.
415
00:37:07,040 --> 00:37:08,960
Twice as big as Nymph...
416
00:37:11,360 --> 00:37:14,840
...and her biggest obstacle
to reaching adulthood.
417
00:37:17,920 --> 00:37:20,840
He can take down prey
many times his size.
418
00:37:22,920 --> 00:37:24,880
He'll even eat his own young.
419
00:37:41,000 --> 00:37:42,800
(BIRDS CHIRPING)
420
00:37:49,480 --> 00:37:52,120
Fine hairs on Nymph's legs,
421
00:37:52,120 --> 00:37:55,200
sense subtle changes
in the underwater currents.
422
00:37:56,560 --> 00:37:59,440
They alert her
to something large nearby.
423
00:38:03,720 --> 00:38:05,200
A potential meal?
424
00:38:08,440 --> 00:38:10,760
Curiosity lures her closer.
425
00:38:12,080 --> 00:38:14,080
(TENSE MUSIC)
426
00:38:22,320 --> 00:38:23,720
Around a rock...
427
00:38:25,400 --> 00:38:27,200
...the mystery creature
becomes apparent.
428
00:38:35,720 --> 00:38:37,960
They each see the other as prey.
429
00:38:56,040 --> 00:38:57,880
Nymph makes the first move.
430
00:38:57,880 --> 00:39:01,120
But she's too close for
her pincers to be effective...
431
00:39:04,720 --> 00:39:08,520
...and Waterbug drags her
underneath him, to pin her.
432
00:39:13,280 --> 00:39:14,840
Nymph twists,
433
00:39:14,840 --> 00:39:16,880
allowing her to break free.
434
00:39:24,600 --> 00:39:27,120
Her tail end works like a jet ski...
435
00:39:28,480 --> 00:39:30,720
...forcing out a pressured
stream of water
436
00:39:30,720 --> 00:39:32,760
to propel her forwards.
437
00:39:37,680 --> 00:39:39,640
More agile? Maybe.
438
00:39:42,760 --> 00:39:44,560
But Waterbug is stronger.
439
00:39:53,720 --> 00:39:56,200
He pins her a second time,
440
00:39:56,200 --> 00:39:59,040
and tries to use
his needle-like beak
441
00:39:59,040 --> 00:40:01,440
to inject her
with digestive saliva.
442
00:40:02,600 --> 00:40:06,520
Nymph's exoskeleton is covered
in a tough armour plating.
443
00:40:07,800 --> 00:40:12,000
Waterbug searches for
any soft spot to insert his beak.
444
00:40:15,400 --> 00:40:17,960
Nymph, is unable to wrestle free,
445
00:40:17,960 --> 00:40:19,800
but there's a lifeline.
446
00:40:20,760 --> 00:40:23,840
She can breathe underwater
through gills in her abdomen.
447
00:40:25,200 --> 00:40:27,320
Waterbug is an air breather.
448
00:40:27,320 --> 00:40:29,960
The battle is sapping his oxygen.
449
00:40:32,600 --> 00:40:34,760
If Nymph can keep up the fight,
450
00:40:34,760 --> 00:40:37,440
Waterbug will be forced
to break for the surface.
451
00:40:40,080 --> 00:40:42,240
He adjusts his body to reach up.
452
00:40:44,800 --> 00:40:46,960
It's all Nymph needs to break free.
453
00:41:05,360 --> 00:41:07,680
Deploying a snorkel
from his rear...
454
00:41:08,800 --> 00:41:11,440
...Waterbug breathes in
as fast as he can.
455
00:41:13,400 --> 00:41:16,480
He traps air under his wings
like a scuba tank.
456
00:41:19,120 --> 00:41:21,280
Then races to find Nymph.
457
00:41:26,280 --> 00:41:27,880
But he's too slow.
458
00:41:30,040 --> 00:41:34,120
Nymph's camouflage,
is like a cloak of invisibility.
459
00:41:35,560 --> 00:41:37,600
She disappears into the murk.
460
00:41:39,120 --> 00:41:42,600
She's now one day closer
to gaining her wings.
461
00:41:43,680 --> 00:41:46,840
Waterbug, must continue
his hungry hunt.
462
00:41:58,000 --> 00:42:01,640
Brown Bear, has followed
the alluring scent trail.
463
00:42:09,440 --> 00:42:13,640
A whale,
washed up in a recent storm.
464
00:42:19,040 --> 00:42:22,360
20 tonnes of highly calorific meat.
465
00:42:28,280 --> 00:42:29,920
It's a goldmine.
466
00:42:29,920 --> 00:42:31,760
(FLIES BUZZING)
467
00:42:38,960 --> 00:42:40,400
But there's a catch.
468
00:42:43,680 --> 00:42:45,960
Someone else has discovered it, too.
469
00:42:52,080 --> 00:42:53,680
A large male...
470
00:42:56,280 --> 00:42:57,920
...and two females...
471
00:43:00,960 --> 00:43:03,480
...enjoying the feast
of a lifetime.
472
00:43:06,080 --> 00:43:09,480
The male tolerate females
sharing the carcass with him...
473
00:43:11,480 --> 00:43:14,360
...as they aren't a threat
to his place in the hierarchy.
474
00:43:16,480 --> 00:43:18,360
There's a high chance
they'll allow him
475
00:43:18,360 --> 00:43:19,960
to mate with them, too.
476
00:43:23,680 --> 00:43:25,360
(HUFFING)
477
00:43:30,040 --> 00:43:33,440
If Brown Bear wants
a place at this table,
478
00:43:33,440 --> 00:43:35,080
he must fight for it.
479
00:43:40,040 --> 00:43:42,040
Ears forward and mouth open...
480
00:43:42,040 --> 00:43:43,280
(GROWLS)
481
00:43:43,280 --> 00:43:45,320
...he makes his intentions clear.
482
00:43:47,000 --> 00:43:50,280
This time,
he's ready for an all-out brawl.
483
00:43:51,920 --> 00:43:53,440
(GROWLING)
484
00:43:53,440 --> 00:43:56,280
The females sense
they won't be able to eat in peace
485
00:43:56,280 --> 00:43:57,480
and move off.
486
00:43:59,360 --> 00:44:01,800
But the big male, stands firm.
487
00:44:06,120 --> 00:44:07,920
(HUFFING)
488
00:44:20,360 --> 00:44:21,720
(GROWLS)
489
00:44:25,040 --> 00:44:26,960
(TENSE MUSIC)
490
00:44:29,840 --> 00:44:31,720
(ROARING)
491
00:44:37,000 --> 00:44:39,960
Each bear weighs over 450 kilos.
492
00:44:48,240 --> 00:44:50,040
(ROARING CONTINUES)
493
00:44:50,920 --> 00:44:53,960
Their front legs are
the strongest of any predator.
494
00:44:55,080 --> 00:44:58,440
And their jaws are capable of
killing bison and wolves.
495
00:45:01,520 --> 00:45:05,760
But taking on one of their own kind
is a different story.
496
00:45:06,600 --> 00:45:11,200
Brown Bear, in the left corner,
senses they're an even match.
497
00:45:14,320 --> 00:45:16,200
(HUFFING, GROWLING)
498
00:45:16,200 --> 00:45:18,640
To assert his dominance,
499
00:45:18,640 --> 00:45:21,640
he must convince the opponent
that he's tougher.
500
00:45:23,440 --> 00:45:26,160
The opponent
rises on his hind legs,
501
00:45:26,160 --> 00:45:29,160
to over two-and-a-half metres tall.
502
00:45:29,160 --> 00:45:31,760
But he can't keep a footing
amongst the boulders.
503
00:45:33,520 --> 00:45:36,040
Brown Bear swipes at his legs,
504
00:45:36,040 --> 00:45:38,080
trying to knock him off balance.
(ROARING)
505
00:45:43,800 --> 00:45:45,680
The challenger is wrongfooted.
506
00:45:49,240 --> 00:45:52,200
And Brown Bear pushes him back
into the water.
507
00:45:56,000 --> 00:45:57,960
(ROARING CONTINUES)
508
00:46:03,040 --> 00:46:06,960
Dominance fights like this are won
by wearing down the opposition.
509
00:46:14,080 --> 00:46:16,200
It's a drawn-out wrestling match,
510
00:46:16,200 --> 00:46:19,440
with each bear trying to tire
the other into submission.
511
00:46:22,120 --> 00:46:24,960
Brown Bear's relentless
biting and pawing
512
00:46:24,960 --> 00:46:26,880
is overwhelming his competition...
513
00:46:32,480 --> 00:46:34,400
...slowly exhausting him.
514
00:46:44,720 --> 00:46:48,800
His rival is outbattled
and drained of energy.
515
00:46:54,240 --> 00:46:57,240
While the defeated male
nurses his wounds...
516
00:47:02,160 --> 00:47:06,400
...Brown Bear tucks into
his 20-ton prize of whale meat.
517
00:47:19,080 --> 00:47:23,560
The blubber alone, contains
some 8,000 calories per kilo.
518
00:47:32,320 --> 00:47:35,560
He'll gain close to three kilos
with each sitting...
519
00:47:39,000 --> 00:47:44,160
...ensuring he'll be sufficiently fat
to survive the next winter.
520
00:47:57,240 --> 00:47:59,560
(BEAR GROWLS)
(WOLF SNARLS)
521
00:47:59,560 --> 00:48:02,400
The wolves will have to
make do with the scraps.
522
00:48:11,120 --> 00:48:13,800
Brown Bear's successful
display of dominance
523
00:48:13,800 --> 00:48:15,520
hasn't gone unnoticed.
524
00:48:17,000 --> 00:48:19,840
A female has returned
to show her interest.
525
00:48:33,280 --> 00:48:36,160
And with the competition
now long gone,
526
00:48:36,160 --> 00:48:38,320
these two can be left in peace.
527
00:48:50,280 --> 00:48:52,280
(EAGLE CALLING)
528
00:48:55,800 --> 00:48:58,080
All across the tidelands...
529
00:48:59,320 --> 00:49:02,400
...the good weather
has delivered on its promise.
530
00:49:05,040 --> 00:49:06,960
Under the golden sun
531
00:49:06,960 --> 00:49:10,400
daring strategies
have allowed the boldest,
532
00:49:10,400 --> 00:49:14,080
and the bravest,
to reap great rewards.
533
00:49:16,400 --> 00:49:20,280
Once more, calm has returned
to the tidal flats.
534
00:49:21,160 --> 00:49:23,560
And new chapters are being written.
535
00:49:25,160 --> 00:49:28,120
These animals
have won their battles,
536
00:49:28,120 --> 00:49:29,560
and their prize?
537
00:49:31,120 --> 00:49:32,720
To live another day...
538
00:49:33,920 --> 00:49:35,840
(TRIUMPHANT MUSIC)
539
00:49:35,840 --> 00:49:37,840
...and survive another winter...
540
00:49:39,000 --> 00:49:42,320
...in America's wild tidelands.
541
00:49:46,440 --> 00:49:48,600
(BROODING THEME MUSIC) 39805
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