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Category

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Animals
Transcript
00:00Attraction and reproduction are two very potent driving forces in the animal world.
00:08Intense, often breathtaking, and on many occasions very aggressive behavior is a common symptom.
00:30Chilean flamingos engage in a beautiful and elegant choreography, a communal bridal show
00:41full of tension. The flamingos come together for breeding and to participate in a series
00:51of spectacularly synchronized dances that help them channel the tension generated by
00:57reproductive passions, whilst at the same time needing to form a defensive colony.
01:08But despite efforts to manage such an outpouring of energy
01:11in a civilized way, there are times when battle becomes unavoidable.
01:57In this case, one of the male hopefuls is attacked by a group of roustabouts.
02:07The suitor has no choice but to flee.
02:17Far from shimmering, simmering Andean lagoons and marshes,
02:22tales of love and violence go hand in hand in the Mediterranean forest.
02:27Red deer. Today they're calm and wander through the forest, grazing where they go.
02:51In the grass beneath their hooves, strange-looking crickets prowl.
02:58The heads of Lusitanian spade crickets are flat and elongated, like a kind of retractable hood.
03:08Right now they seem more interested in finding some food and swallowing it in a hurry,
03:13rather than any other passion. Nobody quite knows why they have such a strangely shaped head,
03:20an extraordinary hood-like feature.
03:27The good weather arrives, long hot days raising the atmospheric temperature
03:32and with it the spirits of many species.
03:41An almost palpable tension pervades above the deer and cricket's heads,
03:46making the large insects below nervous.
03:49Excited by hormones, stag beetles are in their apogee, full of energy.
04:06Their outrageous jaws are out of all proportion to the size of their owners.
04:11Although they have the same purpose, the antlers of actual stags are small in comparison.
04:20Such formidable apparatus is intended to intimidate and, if necessary, fight.
04:31Males compete with each other for females in a very small territory,
04:35right in their prospective partner's backyards.
04:39Female stag beetles emit powerful pheromones that attract males,
04:43and these two are the only ones who can compete.
04:49The two must compete for her favours.
04:54Just as elsewhere in the world, three is a crowd.
04:58The more aggressive beetle will chase off his rivals.
05:06One launches the first attack.
05:14The other looks for something to give him an advantage,
05:17a position that allows him to fight back.
05:25The former will not give up until he expels his opponent, or loses his little kingdom.
05:33It's an undisputed KO. The more aggressive beetle the first to show his hand wins.
05:47So
06:05the loser must now fly off in search of another female to conquer.
06:17So
06:22it's only a matter of time before the red deer are also in heat and start their own battles.
06:31At the end of summer, the first storms refresh the heavy atmosphere,
06:36and it's now that the unbridled zeal of the deer really starts.
06:40So
06:44the bellowing of large males fills the forest, a strategy intended to intimidate any opponent.
06:57The spectacle of males bellowing at the tops of their lungs and fighting with all their might
07:03seems to hark back to the jousting of medieval knights intent on winning their lady's favours
07:09by bringing down all adversaries.
07:19The stag's mission is to maintain a sizable and exclusive harem within his woodland kingdom,
07:24and reproduce with all of them. But other males are jealous of both his territory and his females.
07:33The nature of the confrontation changes from challenging bellows to close quarters combat.
07:39So
07:55the crack of clashing horns will echo around these woods for several weeks.
08:09So
08:40So
08:47far away, high up in the rugged mountains that tower over the mediterranean forests,
08:52another conflict of interest begins with the onset of the colder days of autumn.
09:09So
09:16on the sheer rocky outcrops of the Sierra de Gredos, Iberian ibex, Spanish wild goats,
09:23face deadly dangers every day. But right now those risks are heightened.
09:30An urgent new encyclical question is added to the perils of living in their vertiginous mountain
09:37home.
09:48It's the mating season. Even youngsters are caught up in the tension.
09:53They're the first to rehearse the ritual fights.
09:57So
10:03anywhere will do for practicing a thumping headbutt.
10:09And there are no age limits.
10:14So
10:26ibex hone their fighting skills from when they're kids,
10:30so that when they reach maturity they can employ them with maximum efficiency.
10:43So
11:14so
11:18it seems this female is finding the attention of the increasingly inquisitive males
11:23as they check her potential fertility overwhelming.
11:30The most powerful goat is first in line.
11:38To gain that privileged position he has seen his fair share of battles.
11:44So
11:59during the mating season vertigo in the heights and vicious horns are the twin prongs of a daily
12:06dilemma.
12:20When in heat males focus all their energy on driving away any rival.
12:25And that leads to more than just a bout of head scratching.
12:30They smash into each other in rutting contests that can last for hours.
12:36So
12:38so
13:03the sierra shudders with the sound of head-on collisions.
13:08So
13:39despite the ferocity of the fighting there are never casualties,
13:43although maybe a fair few headaches.
14:00At the foot of the mountains in mediterranean home oak groves
14:04as the amorous zeal of the goats abates some very scandalous birds keep the flame of passion alight.
14:14Cranes.
14:35So
14:47common or eurasian cranes spend the winter among the iberian oak homes feeding on acorns and tender shoots.
14:58Like many tourists from northern europe they come to spain for a winter vacation
15:03looking for good weather sunshine and food.
15:07Here they can escape the snowfalls and blizzards of their colder homes.
15:33So
15:40Their life cycle is governed by both the length of the days and the weather.
15:48Just before they journey back to where they will bring up their family they go into heat.
15:53Their iconic suggestive courtship dances take place against the backdrop of home oaks.
16:03Their calls ring out in the cold winter air.
16:14Males proudly display their plumage. They stretch their necks and trumpet loudly.
16:23So
16:31The most ardent males noisily face up to each other. The tension increases.
16:36Females look on without wishing to seem too interested.
16:40So
16:50At the climax of the show the males finally jump and attack each other.
17:10So
17:12So
17:37It may still be winter but the power of love and sex
17:42spreads unashamedly.
17:49The cranes dance and fight during the day and at night the curtain raises on the evening show.
18:00It's the turn of natajak toads.
18:02So
18:07All the toads from across the region congregate in the warmest ponds when they reach barely five or six degrees centigrade.
18:19Before winter had fully passed the largest males were already swimming in the small lakes.
18:25They were the first to arrive followed by hundreds more
18:29to form a nocturnal chorus that deafens the darkness.
18:40The males throats swell and they croak with all their might.
18:49It's a sound that can be heard over a kilometer away.
18:52All this vocal enthusiasm and effort is to all intents and purposes the amphibian version of the voice.
18:59Albeit with a very different prize.
19:02Each male sings with every drop of energy he has in order to attract a female.
19:12It's not an easy task for them to distinguish between so many competitors.
19:16The best singer, according to the jury of female toads, will be the first to mate.
19:25The males embrace the females from behind while they lay their eggs.
19:32Singing is only the first part of the exercise, however.
19:36Many times during this mating frenzy, the toads will even engage in a strange hand-to-hand sumo wrestling match.
19:43Other hopeful males, knowing only their own passion, try to split the happy couple up.
19:49The fertile female is buried under an avalanche of males who kick and lash out at each other to get to the prize.
19:58The male toad is the first to mate.
20:01The female toad is the second to mate.
20:05The male toad is the third to mate.
20:09The male toad is the fourth to mate.
20:12The male toad is the fifth to mate.
20:15They kick and lash out at each other to get to the prize.
20:24Having such slippery bodies does not prevent a fierce tussle from breaking out.
20:45The first male to mate will not give up his bride.
20:48He holds her tight to assure he fulfills his part of the reproductive process.
21:06The first male to mate will not give up his bride.
21:09He holds her tight to assure he fulfills his part of the reproductive process.
21:15He holds her tight to assure he fulfills his part of the reproductive process.
21:28And still, the fight to reproduce can get more feverish.
21:34It's late May in the forests of Canada.
21:38Common garter snakes are beginning to wake up from their winter sleep.
21:45♪♪♪
21:55♪♪♪
21:59The first to emerge from hibernation are the males.
22:07Within a few days, around 70,000 males will take possession of a small part of the forest floor.
22:15This is the highest concentration of snakes per square metre on the whole planet.
22:27And they're all here for one and the same reason,
22:30to mate, although very few will succeed.
22:39The females emerge individually a little later.
22:42Barely have they sniffed the warming spring air
22:45when they're surrounded by countless males who try to conquer them.
22:50The tension is almost unbearable.
22:52For every female, there are up to 5,000 suitors.
23:06But although the males have just come out of a long sleep,
23:09they will only live for another month with the sole objective of mating.
23:13In this time, they will not eat, drink or rest.
23:21They spend what limited energy they have in a frenetic effort to mate.
23:28Every one of them is under tremendous stress,
23:30as they must fight off thousands of opponents every time a female appears.
23:40It may be bloodless, but it is nonetheless an intense struggle,
23:44and it takes a heavy toll on the male garter snakes.
23:55Scientists have shown that their frenzied passion causes premature ageing and death
24:01much sooner and in worse conditions than females.
24:09So,
24:28the heart of the Brazilian jungles near the Amazon region.
24:34Despite their fiery and iridescent plumage,
24:37Andean cock-of-the-rock birds manage to keep out of sight while eating.
24:48They gorge on the fruits of palm trees.
24:50Food here is abundant and there's always something appetizing to wolf down.
25:07This is a time of recharging batteries, of gaining strength in preparation for what's coming.
25:17Every afternoon, all through the year, each male cock-of-the-rock flies to its own corner of the
25:28jungle. They're in training for the key moments of their reproductive behavior. In areas of the
25:41jungle known as leks, dozens of cock-of-the-rock gather to compete, like gladiators meeting in the
25:51sandy arenas of ancient Rome. They arrive little by little and settle in the branches. They study
26:04their opponents and shout at each other. It's a constant bustle.
26:25And the ritual is always the same. Loud calls and cackles are the first line of attack to
26:31drive off rivals, then shaking feathers and wings, then little pursuits. Everyone tries
26:39to find the best position where the sun's rays filter through the thick foliage. The bright
26:45beams of the setting sun are a highly prized commodity that makes their plumage seem to
26:50burn like fire. Only the most attractive will get the best mates.
27:02These are no empty-headed Zoolander-like models. They carefully calculate the time
27:08and find the exact place the sunlight will burst through the leaves. They prepare thoroughly
27:15throughout the year for just a few days of the mating season when females come to look
27:20for the most splendid males.
27:22Far away, in another ever-dwindling jungle, another battle takes place. In this one,
27:52though, colour is used as a weapon. These fascinating jungles in Madagascar are inhabited
28:01by their very own species. The island is the only home of lemurs, a unique kind of ape.
28:11It's also where the most species of chameleons are found together. More than 30 of these
28:21surprising reptiles. There are giant chameleons and dwarf chameleons here. One species is
28:37Parsons' chameleon. Unlike toads, cock-of-the-rock and the vast majority of animals, it's female
28:47chameleons that fight for the attention of males. Parsons' chameleon is small, so it can
28:59hide perfectly among the jungle greenery. This is a very useful characteristic that
29:07helps them avoid being hunted and eaten. Chameleons are experts in camouflaging themselves
29:24and go unnoticed by many other animals. But between individuals of the same species,
29:29there are no secrets. They can always see each other. Their suit of camouflage can
29:39change colour almost in an instant if a warning signal is needed. And when a male and two females
29:51come close, and the same tree is considered close, then war is inevitable. These are the
29:59true Amazonian warriors. There can be no sisterly compromise. This tree is not big enough for the
30:09both of them. Chameleons change colour to fight, communicating irritation, jealousy or anger to
30:20their rivals. When discovered, the battle begins. Lighting up with vibrant reddish colours,
30:38the more aggressive chameleon threatens the newcomer. The subordinate also changes colour
30:48in an attempt to resist. The fight is a kaleidoscope of incendiary colours,
30:54each change of skin tone intended to expel the competition. The fight ends with the expected
31:12outcome. The weaker chameleon raises the white flag, and the victorious female now
31:18waits for her male to arrive at his appointed hour. Call it love, sex or reproduction,
31:28it drives all creatures, pulling the strings across the whole planet in a staggering variety of ways.
31:35Sometimes very harsh. In Chile, in the Atacama desert,
31:49the local cow-polican bees hover around the outskirts of their underground cities.
32:06In the driest desert in the world, life is very hard indeed. Bees have found that the best way to
32:14escape the heat and aridity is to excavate chambers in the sand which retain some humidity and coolness.
32:20Cow-polican bees build their small subterranean colonies near the entrances of local residents'
32:30burrows. A small swarm of males patrols the city gates. Males with their striking orange
32:50thorax seem very abundant. In contrast, the duller-coloured females are conspicuous in
33:01their absence until one emerges from the cool earth. She immediately goes to work,
33:19but as soon as she appears at the surface, she's descended on by a group of males.
33:23The competition is fierce. This may be the male cow-polican's only chance to reproduce.
33:47The males fight bitterly over the female. They pounce on her and she seems unaware of
33:55how to act in light of such a fulminating attack. Some males may have managed to fertilise her,
34:14but many others, exhausted by the combat and the heat, die out in the sun.
34:19Above the corpses of the tiny insects, their neighbours, burrowing parrots like giant
34:40colourful bumblebees, buzz around their large colony.
35:10While the cow-polican bees lead quiet, discreet lives, burrowing parrots are
35:17somewhat annoying neighbours who yell for no reason and without taking a breath.
35:40Burrowing parrots live together and fight together.
36:10This parrot species usually forms stable mating couples,
36:38but as in any relationship, there are good days and bad days.
37:08Communal life offers protection and company, but it also brings a lot of stress and rivalry.
37:16There are close relationships on the one side and the eternal squabbling of couples and neighbours
37:29on the other. And yet, despite the fights, parrots will never draw blood.
37:59In fact, even size does not necessarily mean that fights will end with blood flowing.
38:15Southern elephant seals rest on the beaches of the Valdez Peninsula in Argentina.
38:24They spend only a couple of months each year on land in order to reproduce.
38:29The males spread out over the beaches to form their harems, which vary slightly in number.
38:55But despite their considerable efforts, only a few males are able to maintain a harem.
39:01They do so only once in their lives, so at that time they must fight without rest.
39:24Each male must defend his group of fertile females. For weeks, the male elephant seals
39:46hardly sleep or eat. Defending the exclusivity of their reproductive partners occupies all
39:52their time and energy. Male elephant seals appear to be capable of the fiercest combat
40:02in the natural world. Although in reality, determination is the most important thing.
40:22Shouting and pushing intimidates most competitors, and it certainly helps if you
40:32can really throw your weight around to back up your verbal threats. Titanic males weighing up
40:43to four tons smash into each other to establish priority when it comes to passing on their genes.
40:52And once he's driven off his rivals, a male will focus on his females in a display of surprisingly
41:05tender affection.
41:22Love, sex, violence, an explosive recipe, and one not only seen in Hollywood.
41:51Ritualized mating behaviors are common in the wild and have evolved in order to avoid unhappy
42:00endings. Black flanked rock wallabies swarm over the ancient rocky outcrops of Australia. These
42:11little kangaroo-like marsupials are usually very peaceful. They live in stony environments where
42:23they can make a quick getaway if the need arises. Among the rocks, they know where to find the
42:35plants on which they feed and the small pools where the water from the last rains is stored.
42:41Rock wallabies lead an austere but largely quiet and calm existence. Until the script
43:06turns to sex and ignites their passions that is. Then the scent of fertility that females
43:21produce is enough for males to go from being BFFs to hateful adversaries. The transformation
43:34into violent, ruthless beings is almost beyond fiction. The mating season for rock wallabies
43:54is a free-for-all, free boxing match. No rights or rules in this bout. The gloves are off and
44:01anything goes. Flying kicks, punches, slaps and scratches and one male emerges victorious.
44:32ROAR
44:36ROAR
44:41ROAR
44:47ROAR
44:52ROAR
44:57ROAR
45:01ROAR
45:05ROAR
45:09ROAR
45:18And in a no-limit street fight like this, serious injuries are incurred. The loser can come off
45:27very badly indeed. Passion pushes animal behavior in many different and startling directions.
45:37Some of the most remarkable natural spectacles on the planet are triggered by sex. Desire,
45:49the basic need to reproduce. Elegant dances, devastating duels, brutal brawls. Each species
45:58has its own effective and decisive way of resolving affairs of the heart.

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