SKAITV — broadcast
20260920 020000 UTC
352 transcript segments
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[00:00:06] His ears rotate independently,
[00:00:09] always listening out for the ominous crunch of
[00:00:13] footsteps in the
[00:00:14] snow.
[00:00:14] spotted,
[00:00:43] of of
[00:00:47] links are agile
[00:00:49] hunters, though not
[00:00:53] quite as light on their
[00:00:56] of feet, which buys the hair.
[00:01:00] Precious
[00:01:00] seconds.
[00:01:30] but no hiding place will be safe for
[00:01:35] of long.
[00:01:41] deep in the ucon, snow shoe hair
[00:01:44] freezes, not from cold, but from
[00:01:47] fear. Canada links don't
[00:01:50] of give up on dinner
[00:01:51] easily,
[00:01:55] so escape must be timed to
[00:01:58] perfection.
[00:02:13] With the help of those snow shoes, he can hit a top
[00:02:17] speed of 30 mp
[00:02:19] hour,
[00:02:26] a clean getaway.
[00:02:31] "and that's
[00:02:33] unusual.
[00:02:37] Canada links rarely
[00:02:39] miss. This
[00:02:43] is one lucky
[00:02:45] bunny.
[00:02:49] When the breeding season arrives, there will be
[00:02:53] more hairs to take the
[00:02:54] heat. Until
[00:02:57] then, he'll need to stay. on his
[00:03:00] toes,
[00:03:15] by late winter in Alberta,
[00:03:18] of 12,00 feet up, the towering mountains
[00:03:22] of the Rockies are coated in layer upon layer
[00:03:26] of snow.
[00:03:30] In places more than 20 feet
[00:03:32] deep,
[00:03:45] a playground for millions of visitors every
[00:03:48] year,
[00:03:56] a but be careful.
[00:04:00] The spring sunshine weakens the vast shelves
[00:04:04] of mountain
[00:04:05] snow,
[00:04:10] priming one of nature's most destructive
[00:04:13] events.
[00:04:28] Avalanche.
[00:04:53] million tons of snow and ice
[00:04:56] race down hill at speeds of For
[00:05:00] 100 miles an
[00:05:01] hour.
[00:05:15] More than 2,000 avalanches are reported in
[00:05:19] the Rockies every year,
[00:05:23] many more go
[00:05:24] unwitness.
[00:05:33] As the planet warms, avalanches are becoming
[00:05:37] ever more
[00:05:39] unpredictable.
[00:05:54] In the shadow the rockies, even in late
[00:05:57] April, snow still falls across these vast
[00:06:01] grasslands, but make no
[00:06:04] mistake, spring has
[00:06:07] arrived, and so have a
[00:06:11] group of determined.
[00:06:17] answers,
[00:06:17] but will all this be enough to melt the hearts of ice
[00:06:21] queen?
[00:06:28] standing high over the plains of Alberta, the
[00:06:32] rockies channel warm winds down their eastern
[00:06:35] flanks, winds known as
[00:06:38] snow-eaters.
[00:06:42] As they descend, they heat up,
[00:06:46] raising the temperature the planes below by as much as 20
[00:06:50] degrees.
[00:07:00] Out on the prairies, pretty much everyone is early
[00:07:03] riser.
[00:07:12] or so than sharp tailed
[00:07:14] grouss. They're here to
[00:07:18] catch the very first rays of sunshine,
[00:07:22] but they can't resist any
[00:07:24] spotlight.
[00:07:32] The males gather every April for mating
[00:07:36] dance
[00:07:36] off.
[00:07:40] The females are the judges. and the prize
[00:07:43] is, well, bet you can
[00:07:46] guess.
[00:07:54] as dawn breaks, it's
[00:07:56] showtime.
[00:08:05] stopping their feet 20 times per
[00:08:08] second, with a shake and a shimy.
[00:08:12] It's all about
[00:08:14] seduction,
[00:08:20] they look their best at this very
[00:08:22] moment, and they know
[00:08:25] it, she'll be looking for
[00:08:29] style
[00:08:35] and
[00:08:35] stamina,
[00:08:40] very nice. He's
[00:08:44] not bad
[00:08:44] either,
[00:08:49] the choice is
[00:08:50] bewildering,
[00:09:08] but without clear winner, fights break out on the dance
[00:09:12] floor.
[00:09:23] With all this testosterone flying
[00:09:25] around, she's losing
[00:09:29] interest,
[00:09:40] they seem to want the fight. more than the
[00:09:44] priz,
[00:09:49] the males need to up their
[00:09:52] game.
[00:10:00] By June, under a sun that no longer
[00:10:04] sets,
[00:10:08] even the most stubborn snow melts away.
[00:10:25] transforms the frozen
[00:10:27] north.
[00:10:31] This is America's largest wildlife
[00:10:34] refuge. 30,000 square miles
[00:10:38] of
[00:10:38] Alaska.
[00:10:43] The Arctic
[00:10:44] Refuge.
[00:10:51] In summer, one animal dominates these.
[00:10:55] science,
[00:10:58] caribu, you
[00:11:02] might know them as reindeer. there are
[00:11:06] nomads, following the retreating
[00:11:08] snowmelts, sometimes for a thous
[00:11:11] miles, the longest land migration in the
[00:11:15] world.
[00:11:20] every summer, for centuries, karibu have been coming
[00:11:23] here to have their...
[00:11:25] has,
[00:11:32] this little male is only three weeks
[00:11:35] old, but he can already run
[00:11:38] faster than an olympic
[00:11:41] sprinter.
[00:11:47] It's easy to lose track of whose mom is
[00:11:51] whose.
[00:11:57] Wanting to explore can get you into
[00:12:01] trouble around
[00:12:02] here,
[00:12:05] anyone who can't keep up with a herd will be
[00:12:09] left
[00:12:10] behind,
[00:12:23] but their unique calls. and send
[00:12:27] usually mean they can find each
[00:12:28] other, come winter
[00:12:32] time, he will be
[00:12:34] independent, but until
[00:12:38] then mom is his whole
[00:12:41] world, whether she likes it or
[00:12:45] not,
[00:12:51] as the herd eat their way through more than a thousand times... of
[00:12:55] tunder grasses every
[00:12:57] day, they move
[00:13:01] further west across the coastal
[00:13:03] plins,
[00:13:10] but hunger is driving them towards
[00:13:13] danger,
[00:13:19] the snow that blanketed the frozen
[00:13:21] north now descend. from the
[00:13:25] mountains as billions of gallons of
[00:13:28] melkwater channed into
[00:13:32] raging torrents, cutting
[00:13:36] across the caribos
[00:13:37] path.
[00:13:42] These rivers are deeper and faster than ever
[00:13:45] before, and the
[00:13:49] feeding grounds lie on the other
[00:13:52] side.
[00:13:56] This crossing is more than young calf is ready
[00:13:59] for,
[00:14:05] but survival depends on
[00:14:08] it.
[00:14:31] The current takes them by
[00:14:33] surprise, sweeping him off his
[00:14:37] feet.
[00:15:06] This mother now has tough choice to
[00:15:08] make.
[00:15:17] On the river banks of Alaska's arctic
[00:15:20] refuge. This
[00:15:23] caribu mother. stands the water for any sign of her
[00:15:27] missing
[00:15:28] calf.
[00:15:40] The herd is moving on, her instinct
[00:15:44] to follow is just too
[00:15:47] strong.
[00:16:03] Down river, the calf is still alive.
[00:16:29] He has fighting
[00:16:31] spirit,
[00:16:34] but he's exhausted.
[00:16:40] Mom's nowhere to be
[00:16:41] seen,
[00:16:47] as the herd slows down to feed, all
[00:16:51] lost calf can do is try to catch
[00:16:54] up.
[00:17:12] Female karibu rarely adopt, lost orphan
[00:17:15] young.
[00:17:49] Mom recognizes a familiar
[00:17:51] leader
[00:18:00] reunited.
[00:18:17] You have to grow up quickly in the far
[00:18:19] north.
[00:18:24] These ancient roots will soon be ingrained in his
[00:18:28] memory.
[00:18:34] His destiny is to endlessly. wander this
[00:18:38] vast american
[00:18:40] tundra,
[00:18:52] as summer warms the north, hundreds these
[00:18:56] swallen rivers carry soil and nutrients from the
[00:19:00] land to the
[00:19:01] sea.
[00:19:08] And for some this becomes a time of
[00:19:12] plenty.
[00:19:32] In July on Alaska's isolated round
[00:19:35] island. A strange
[00:19:39] sound is carried on the wind. Just
[00:19:42] listen,
[00:19:57] this is the surprising
[00:19:59] song
[00:20:04] of male walnusses.
[00:20:08] known as
[00:20:09] chiming,
[00:20:13] it's made by pockets of air in their
[00:20:15] throats. usually they sing
[00:20:19] to impress females during the winter mating
[00:20:22] season,
[00:20:26] but there's no ladies in
[00:20:28] sight,
[00:20:34] which probably suits the ladies. Just
[00:20:37] fine,
[00:20:45] on Alaska's warm summer evenings,
[00:20:49] perhaps this is... is nothing more than their very own
[00:20:52] lulobby,
[00:20:57] for walrises, the short summers are all
[00:21:00] about down
[00:21:02] time,
[00:21:07] but in the shallows of Alaska's
[00:21:09] mainland, there's no
[00:21:12] time to
[00:21:13] rest.
[00:21:20] salmon, gather at the starting line of race that will
[00:21:24] test them to their limits.
[00:21:27] driven by an urge they cannot ignore. salmon
[00:21:31] arrive at the entrance the very same stream in which
[00:21:35] they were born. now
[00:21:39] two years later, it's their turn to
[00:21:42] breed, all 200
[00:21:45] million them.
[00:21:50] This female is carrying at least 2,0
[00:21:53] eggs, returning
[00:21:57] to the same spot in which she was born, will give her
[00:22:00] offspring the best chance of survival,
[00:22:04] but ahead of her lies killer
[00:22:08] assault
[00:22:09] course.
[00:22:18] She must succeed. or die
[00:22:21] trying.
[00:22:25] Prince William Sound,
[00:22:27] Alaska. As the tide races
[00:22:30] out, countless pink
[00:22:33] salmon are
[00:22:35] waiting.
[00:22:39] The scent their spawning grounds grows
[00:22:43] stronger.
[00:22:48] Now it's a race. to cross the shallows before
[00:22:52] the tide cuts them
[00:22:54] off,
[00:23:05] one wrong turn and it's game
[00:23:07] over,
[00:23:15] for Gulls, the banquet has
[00:23:19] begun.
[00:23:24] They can be picky at this
[00:23:26] stage,
[00:23:30] only selecting the most tender
[00:23:32] flesh.
[00:24:00] This female has made serious
[00:24:03] error and is now
[00:24:06] dangerously
[00:24:07] exposed.
[00:24:24] Her determination seems to confuse her
[00:24:27] attacker,
[00:24:38] this is only the beginning,
[00:24:42] every salmon is now unborrowed
[00:24:45] time.
[00:24:51] From here on out, they barely eat or
[00:24:55] rest as they forge
[00:24:57] upstream.
[00:25:06] This journey takes a grim
[00:25:09] toll, as their
[00:25:12] bodies begin to shut down and
[00:25:15] decay, some faster than
[00:25:18] others.
[00:25:22] Finally they arrive at their spawning
[00:25:25] grounds, but it's not over
[00:25:28] yet.
[00:25:34] This female needs to construct a shallow
[00:25:37] nest known as a
[00:25:40] red.
[00:25:45] She flicks away fine sediment to prevent her eggs
[00:25:49] from being...
[00:25:49] smuttered,
[00:26:02] she will... will fiercely defend her nest from other
[00:26:05] females,
[00:26:11] by now some males look like the swimming
[00:26:14] dead, they're zombie
[00:26:18] salmon,
[00:26:23] desperate to mate before they
[00:26:25] die,
[00:26:30] kind of gross.
[00:26:45] After all she's been through, she's not going to
[00:26:49] settle for anything less than
[00:26:51] perfect.
[00:27:03] Males fertilize eggs in as many reds as
[00:27:06] possible, but this will be her only
[00:27:10] chance.
[00:27:15] She will only release her eggs when she's
[00:27:17] ready. It's the
[00:27:21] moment that will seal her
[00:27:24] fate. Spawning and
[00:27:27] dying on the same stretch of river as her mother
[00:27:31] is female. salmon's
[00:27:33] destiny.
[00:27:40] Though their journey ends here, these salmon leave
[00:27:44] behind millions of eggs that will become the
[00:27:48] next
[00:27:48] generation.
[00:28:00] Life.
[00:28:04] dictated by the
[00:28:05] seasons,
[00:28:13] in just two months, winter
[00:28:15] returns,
[00:28:27] some begin the long track
[00:28:28] south,
[00:28:33] Others surrender to many months in the
[00:28:37] den,
[00:28:46] but there are those who are perfectly at home in
[00:28:50] this snowbound
[00:28:51] world,
[00:28:58] the place full of
[00:29:01] magic.
[00:29:07] One thing is certain here in the frozen
[00:29:10] north,
[00:29:15] nothing stays the same for
[00:29:19] long.