Yosemite National Park, spanning over 1,158 square miles in the Sierra Nevada mountain range, supports a remarkable biodiversity including over 90 mammal species, nearly 300 bird species, and numerous reptiles and amphibians. The ecosystem demonstrates complex predator-prey relationships where apex predators like the mountain lion (weighing up to 220 lb with a bite force of nearly 900 lb per square inch) hunt mule deer, while smaller predators such as the bobcat (31 lb) and red fox (6.6-31 lb) specialize in smaller prey. Each species has evolved specific survival adaptations, from the bobcat's 26-foot leap capability to the squirrel's omnivorous diet and 20 mph running speed. The ecosystem faces threats from human activities including illegal hunting, habitat fragmentation, and climate change, highlighting the importance of conservation efforts to maintain this delicate balance of wildlife.
YOSEMITE | The Region with the Wildest Wildlife of the Western United States | Animal DocumentaryAdded:
Heat. Heat.
Squirrels hastily hide in their burrows. Deer flee in terror. And beavers dive nimly into the waters.
The cougar, a relentless predator, [music] bursts onto the scene, ready to assert its place in the food chain.
The bald eagle [music] stalks from above, carefully watching its prey until the precise moment of its attack.
At the same time, the black bear, a dark and fearsome beast, awakens from its winter sleep with every intention of ending a month's long fast.
At night, bats [music] masters and lords of the darkness take to the skies of the valley, offering a unique spectacle.
[music] While the coyote, a skilled nocturnal predator, moves like a shadow in the deepest darkness.
>> [music] >> This is Yusede and the bustling wildlife in this pristine animal empire.
Here the Rocky Mountains touch the clouds, the ancient redwood forests rise like an unbreakable barrier, and the irreverent rivers carve through the granite to follow their course.
In Yoseite, mother nature draws a fine line between [music] reality and imagination.
In this earthly paradise, waterfalls fall from the sky, trees fill the horizon, and [music] fog takes over the valley as if it were a ghost.
In an ecosystem as impressive as it is [music] delicate, each species plays a defining role in the majestic balance of the habitat.
Beavers consummate engineers of nature create entire biomes with their elaborate dams.
Squirrels with their short memory forget thousands of buried seeds that turn into imposing trees full of life. While monarch butterflies by pollinating flowers guarantee the health of the ecosystem.
Every species, no matter how small, represents a piece of this majestic puzzle called Yuseite, a wild oasis where all animals could live in peace and harmony.
Or at least that is how it would be without the relentless [music] predators that rule life in this valley.
Hidden among the lush vegetation, [music] waiting for his chance to catch a carefree pika as prey, the red fox prepares his ambush.
Motionless, hungry, but patient, this small yet experienced killer will not let the slightest rodent that crosses his path escape.
After his long winter rest, the fierce black bear is not willing to continue going hungry and will devour anything that stands in his way.
His gigantic size and aggressiveness make him one of the apex predators of this animal kingdom ruled by carnivores.
But not even [music] this technique is able to escape the absolute lord and master of the valley.
The mountain lion stalks [music] all species in this vast ecosystem with the utmost stealth, bringing terror in its bite without discriminating among them.
Simply put, no one is safe from becoming part of the [music] diet of this fierce carnivore that dominates every corner of the vast yuseite.
From granite mountains over 3,280 ft high to the dense forests on the western slopes, Yusede National Park encompasses a region of over 1,158 square miles, located in the middle of the imposing Sierra Nevada mountain range in the far American West.
With a torturous origin dating back more than 10 million years, the geological formation of Yusede is the result of a silent but intense battle of immense granite rock formations against [music] rigorous climatic conditions.
Millions of years of erosion of the solid rock are what have shaped these endless valleys, canyons, and rolling hills.
Around these colossal granite mountains, nature is expressed in countless biomes that defy reality and make one wonder if we are still on Earth.
In the highlands at an altitude of over 9,842 ft, alpine zones create landscapes full of crystal clearar glacial lakes, craggy peaks, and green high altitude meadows.
In the southernmost part of this natural [music] kingdom, dense forests of giant sequoas over 262 ft tall appear, creating an impregnable natural barrier that protects the rear of this majestic [music] ecosystem.
Many of these trees are over 2,000 years old.
In the heart of Yusede rises the imposing valley surrounded by granite walls and crossed by the generous Merced River with its meadows and inner forests.
It is quite simply one of the greatest works of art ever created by mother nature. A place where life [music] springs up in every corner.
With such a generous paradise, countless wild species take shelter in this unique [music] ecosystem.
Yuseite's varied biomes are home to over 90 species of mammals, [music] almost 300 species of birds, 22 of reptiles, 12 amphibian species, and up to a dozen species of freshwater fish.
Faced with such an overflow of abundance, the almighty masters of the food chain waste no time in hunting down countless prey.
Yuseity is probably one of the best places in the world to be a fearsome predator.
And if anyone knows this well, it is the fierce bobcat.
Hidden among the vegetation, the bobcat stalks its prey. Motionless, staring intently at what is about to become its dinner, this wild cat proves that one of its greatest virtues is patience.
Weighing about 31 lb and measuring roughly 3.3 feet in length, the bobcat may not be one of the largest predators in the world, but it makes up for its compact dimensions with prodigious hunting skills and ruthless ferocity.
Its dense fur in shades of brown, gray, and white makes it almost disappear into the thick vegetation of this living ecosystem.
This calculating wild killer can even spend hours stalking its prey without it even knowing that its days are more than numbered.
To kill its prey, the bobcat uses its set of retractable claws up to 0.8 in long.
These are like sharp blades that dig right into the bodies of its terrified victims.
To deliver the final blow, this utterly untamed cat also often uses its powerful bite.
With long, sharp teeth, the feline can tear the flesh of its prey with an impressive and at the same time terrifying ease.
Like all felines, the bobcat bases its hunting strategies on rapid ambushes that surprise its prey in just seconds.
Using its advanced sense of sight, this voracious carnivore is able to detect even small rodents from hundreds of feet away.
Likewise, its pointy ears, far from being merely decorative, grant, it an enviable hearing that allows it to hear even the slightest squeak in this silent valley.
With its prey now on its radar, the bobcat in hunting mode advances slowly through the bushes without emitting the slightest sign of its presence.
Like a fully experienced strategist, this feline patiently waits for the right moment to launch its attack.
Since losing a prey is a luxury, it cannot afford even the slightest movement must be coldly calculated.
[groaning] After an exhausting weight, the cat sees its opportunity and in just a flash pounces on its prey.
Thanks to its powerful legs, the bobcat can jump up to 26 feet in length and about 6.5 ft in the air. These acrobatic skills mean that practically no prey can escape these fleeting attacks.
Also, in case the prey escapes the first onslaught, this little tiger has no problem engaging in rapid pursuits.
Reaching speeds of up to 30 mph, the result will always be the same.
>> With the vastness of wild species inhabiting Yuseite, the bobcat does not limit its ferocity to just a few and maintains a fairly varied diet that includes deer hairs, foxes, [music] turkeys, squirrels, mice, and even fish.
Because yes, this all-terrain hunter is a very good swimmer.
Given its compact size, it generally tends to prefer small prey.
Often with a hair or a few rodents, it covers its daily nutritional needs.
After a successful day of hunting, the bobcat usually looks for a comfortable place to rest.
Almost always crevices between rocks or a dense thicket will be a more than perfect spot to take a nap.
Of course, the safety and easy access offered by trees being [music] a born climber do not make them a bad shelter option either.
Like a good feline, it is capable of sleeping a large number of hours a day.
[groaning] When low temperatures press in Yoseite, it is common to find the bobcat peacefully curled up with its tail wrapped around its body, providing it with a few extra degrees of warmth.
After a restful sleep, the wild cat usually stretches and spends a good part of its time grooming itself.
>> Licking every area of its body is part of a good fur care routine.
Although most bobcats live in complete solitude, young males sometimes form hunting groups where they work together to get their daily food.
>> While they can sometimes be social at times, these felines are not so gentle with their peers, especially when resources are scarce or there is a female in dispute. Males can become quite [music] temperamental and significant altercations can occur.
In these fights, growls, scratches, and bites are a sign that the fight is serious. Although rarely does one of the cats end up seriously injured.
Having an elusive behavior, it is most common for these hermits to avoid each other, showing that even in nature there are introverts.
Leaving aside all that ferocity and dominance the wild bobcat exerts over small mammals and rodents, not even this efficient hunter is safe from becoming the meal of another fierce beast.
In Yoseite, mother nature is ruthless and yet fair. So just as small hairs and mice flee in terror from the bobcat, the wild cat experiences fear firsthand when a much stockier coyote approaches its territory in the valley.
Given its disadvantage in size and strength, the bobcat, now from the side of the prey, must take measures to avoid becoming part of the diet of this fierce canine.
Generally, tree branches are the ideal place to take refuge from this wild dog.
But since food won't come on its own, the bobcat must sooner or later leave its shelter.
When out in the open, the feline stays alert for the appearance of a hungry coyote.
Those same sharp senses of sight and hearing which allow it to deliver its lethal bite to its prey are the ones that protect it from a tragic end at the hands of a cruel beast that is above it in Yusede's biodiverse food chain.
[screaming] While the bobcat gets lost among the dense vegetation, following its elusive and solitary life in the distance from the heights where the fog dissipates and reveals an imposing landscape of this rich ecosystem, the bald eagle observes the vastness of the valley before its eyes.
With a wingspan of up to 6.5 ft and dark brown plumage with a white [music] head that gives it that bald appearance, this bird is a true reflection of all the majesty that surrounds the wild creatures of Yoseite.
The bald eagle rises in a unique flight through the Rocky Mountains that fill this impressive ecosystem like a guardian of the skies and a sign of the freedom mother nature has given them in this oasis.
Having the infinity of the skies at its disposal, this bird travels long distances with its imposing open wings, letting itself be carried by the wind.
Just as the bald eagle's appearance is impressive to some, to others, this beautiful bird is nothing more than a cruel predator with hundreds, if not thousands of victims [music] in its wake.
The large sharp claws as well as its hooked beak are just a hint of the not at all vegetarian diet of this skilled hunter of the skies.
With more than half of its diet represented by fresh fish, this sea eagle is quick to appear at the numerous rivers that against all logic run through this massive granite surrounded valley.
This bird's skills as a hunter are in short unmatched.
With an enviable sense of sight, the bald eagle is able to detect small fish underwater, even while flying hundreds of feet high.
Given the vast amount of trout and salmon that fill the waters of these rivers, the bird quickly locates its prey and begins its fishing.
Diving at over 62 mph, the bald eagle heads straight for its target in a precisely calculated attack.
With the help of its sharp claws, not even the most slippery of fish can escape imminent death at the hands of this experienced fisherman.
After catching a fish with a meal literally fresh out of the water, the bird prepares to perch on a high branch where it can quietly enjoy its feast.
Although it is capable of submerging during these swift attacks, it often prefers to catch only the fish found on the surface so it can keep its plumage dry.
Surprisingly, like the fierce bobcat, this seabird is capable of swimming.
However, when temperatures in Yoseite are dangerously low, some eagles can suffer from hypothermia.
But being a fearsome bird of prey, the bald eagle does not have to limit its diet to the nutritious fish of the valley's tributaries.
[laughter] Species like rabbits, hairs, snakes, and lizards must also be careful not to fall into the fierce claws of these hunters of the skies.
Even other birds like ducks and cranes can from one moment to the next be welcomed into the diet of this relentless flying killer.
Although it usually hunts solitary, sometimes several individuals form a sort of hunting flock, especially when it comes to considerably sized prey like a hair.
Here it is common to see distraction strategies where one bird catches the prey's attention while another attacks from behind, carrying the defenseless mammal high into the air.
Leaving aside this somewhat social behavior, bold eagles are not always so cooperative when a large prey is at stake.
In some cases, after having successfully captured a voluuptuous prey, envy takes over nearby individuals, and without the slightest invitation, they show up to take their share.
The eagle that has hunted the disputed prey usually tries to escape so as not to have to share.
However, carrying a load, the scavengers often manage to take a good portion of the feast.
In addition to dazzling with their flight, these birds are one of those species that break the stifling silence that floods the valley.
With a wide repertoire of vocalizations through screeches, the eagle marks its territory with other peers emits alarm calls. And of course, when the air is filled with hormones, they are a good way to start courtship.
Through nuptial flights, which are acrobatic pursuits in the air, the pair dives and locks talons to demonstrate their union.
Bald eagles usually form lifelong bonds and when together forever can mean up to 30 years. It is best to choose a good partner.
Of course, to maintain a life as a couple for so many years, a good home is important.
And being two giant birds of prey, it is easy to guess that the nest will not be particularly small.
In fact, these are among the largest in the entire Wild Kingdom. Up to 8.2 ft wide and 19.7 ft deep.
Undoubtedly dimensions worthy of the greatness of these imposing birds. With the nest ready and after culation, the female will be responsible for laying up to three small eggs that will require the care of the couple.
Here both the female and the male participate actively.
After approximately 35 days of incubation, the miracle of life occurs and the young chicks break the shell.
However, parental care does not yet come to [music] an end and these proud parents must ensure the feeding and safety of their chicks until they can fend for themselves.
In about 3 months, these chicks will be able to spread their wings and take to the skies of the wild yeeity.
Just as the pair of bowled eagles works efficiently to build what will be the family's home for years deep in the valley where endless streams converge, nature's engineers are in charge of making preparations for winter.
For beavers, the only way to survive this wild ecosystem is through hard work.
Therefore, months before the landscape turns freezing, these diligent mammals begin remodeling their cozy burrow as well as start shaping their food reserve for the winter.
Thanks to their highly skilled abilities as builders and the infinite number of trees available around their stream, beavers can erect true complexes where there is room for the entire colony.
When autumn begins, it is best not to be near the habitat of these rodents, as trees are being felled in droves everywhere.
Mother nature has given these warmly coated mammals a very efficient saw to cut wood in the form of two pairs of sharp incizers.
Since these [music] prominent teeth never stop growing, beavers are forced to nor wood to wear them down.
In just minutes, a beaver can fell even trunks several inches thick and transport them to their religious skills as swimmers. Using their flattened tail as a rudder, they steer the logs to the right place to build their famous dams. Beavers can fell even hundreds of trees where each log serves a specific function. These dams control the water levels in their ponds as well as clean the water that reaches the surroundings of their burrow.
The dams furthermore are the perfect place to hide their winter pantry from any other herbivore that wants to seize their provisions.
Although the imposing dams are a masterpiece of engineering, the true ingenuity of these rodents is shown in the construction of their lodges.
These are subterranean shelters, often with an underwater entrance where beavers plan to spend the long winter months.
Far from sparing any expense, these rodents build authentic complexes with several tunnels chambers and even ventilation shafts.
With the issue of shelter resolved, the mammals know that one of the biggest challenges of winter is finding food.
For this reason, just as they started their remodeling months in advance, the search for food is also another priority for the entire colony.
As exemplary herbivores, beavers begin to collect every last leaf, twig, or bark they find in their path.
Knowing well that during winter, every little blade of grass will be worth its weight in gold. These rodents waste no time and hoard every last bit of food.
The ideal place to keep the pantry is usually near one of the entrances to the lodge or underwater at the base of a dam.
With a good food reserve taking shape and their burrow completely remodeled, beavers can spend the days leading up to the arrival of winter gaining a little weight and enjoying the still pleasant temperatures.
palm work of all the members of the colony.
Living in family groups of no more than eight individuals, these rodents are true survival experts.
The group is generally made up of a breeding pair and their offspring.
When they are not engaged in their tireless tasks as builders and food gatherers, they are probably grooming themselves to protect their thick fur and keep it clean and silky.
They usually use their claws and teeth to comb themselves, removing any parasites or plant debris from it.
Other pastimes of theirs include play fighting and chasing each other.
It is common to see two of these rodents in what looks like a fight to the death when in reality they are just having fun.
Water games are also an important part of their social interactions because as skilled swimmers they spend much of their time submerged.
One of their favorite games is slapping the water with their tails creating ripples.
Of course, even after having worked hard for weeks, it can't be all fun.
Always keeping in mind that they live in the middle of an ecosystem full of predators, beavers must remain alert to any movement that looks suspicious.
When you weigh no more than 31 lbs and have claws and fangs only useful for construction, you don't command respect from bears, bobcats, or cougars.
For this reason, upon spotting a predator nearby, the colony without looking back takes refuge in its very safe burrow.
Like bald eagles, these semi-aquatic mammals have a varied dialect of vocalizations with which they keep in touch.
Through whines, whistles, grunts, and snorts, these rodents can express the presence of threats, requests for food, and even the desire to play.
Precisely one of the multiple predators [music] of the audacious beavers is a small canine with dense red fur that stalks the rodents from the shadows.
When the wild red fox is on the hunt, the best thing for all small and medium-sized mammals to do is flee because they won't be able to hide.
With a bite of sharp teeth, a set of sharp claws, and unmatched agility, the red fox personifies the nightmare of hundreds and even thousands of small rodents [music] throughout Yusede's delicate ecosystem.
Wandering hungry amidst the coniferous forests deep in the valley, this canine will hunt any herbivore that crosses its path.
Given its tiny size between 6.6 and 31 lb, most of the red fox's diet is based on small [music] mammals.
Among these rodents are its favorites.
When it goes hunting, this wild dog knows well that stealth is its greatest tool.
Having a striking reddish coat, [music] it must try a little harder to avoid drawing attention to itself and secure some succulent prey in the form of mice.
When it comes to hunting, the red fox hides among the vegetation patient and at the same time hungry.
The canine waits to perceive even the slightest sign of a possible prey.
Bearing in mind that its reputation as a pest exterminator precedes it as soon as it goes out in search of prey, the thousands of rodents that inhabit this ecosystem hide even under rocks.
However, this is no problem for the cunning fox.
With the help of its prodigious hearing, it is capable of hearing even the most timid squeak of any mouse, even if it is underground.
Upon discovering the hiding place of its prey, this skilled hunter will quickly finish it off with its fearsome bite and then enjoy what to it is a true delicacy.
But getting to eat up to 2.2 lb of meat a day, a small rodent will not be enough to satisfy its appetite.
The fox must look for something more plentiful if it doesn't want to go hungry.
This is when this small predator demonstrates its ability to adapt to the conditions of the ecosystem, expanding its diet to prey such as marmmets, raccoons, porcupines, apossums, reptiles, and even insects.
But that's not all. Because although the bulk of its diet is based on meat, the truth is that the red fox is omnivorous, even eating fruits, grasses, and tubers when austerity hits its habitat.
Although most of the time wild foxes show their side as unstoppable survivors who will do anything to prevail in this challenging habitat, these canines sometimes show a much more ruthless face.
The fact is that these predators are often the architects of surplus killing events, meaning they wipe out an incredibly high number of prey that they could never devour.
These wild crimes exterminate entire populations of vos, hamsters, [music] gerbles, squirrels, and even some birds.
When seeing meadows with dozens and even hundreds of corpses of small prey, it is easy to guess who the perpetrator was.
A special case is the relationship of these canines with moles. Because although they dislike the taste of the meat of these subterranean mammals, they frequently capture them to bring them as a toy to their young in an atrocious game in which the defenseless mole will inevitably end up perishing, but not before suffering.
It seems that as a sort of punishment for its acts, mother nature has put the tiny red fox in the crosshairs of a predator that vastly exceeds it in ferocity.
For the cougar ending, the life of a red fox is as easy as swiping a sharp claw straight at its head.
Given its marked physical inferiority, this canine that proclaims itself the executioner of rodents throughout the valley upon seeing the mountain lion must flee immediately if it doesn't want to go from predator to prey in just seconds.
Since it knows that in hand-to-hand combat, it would not have the slightest chance of [music] victory, the fox does everything possible to stay out of reach of the formidable feline.
Thanks to its keen sense of smell, the red fox often manages to perceive the arrival of the much fiercer predator far enough in advance and immediately chooses to hide in its burrow or delve [music] into dense bushes where its striking fur won't give it away.
However, the danger for the red fox does not only come in the form of the wild mountain lion.
From above, the majestic golden eagle manages to spot the small dog from miles away and will not let such a generous prey escape its talons.
Diving at top speed, it is only a matter of time before this infallible hunter ends up disembowing the fox in what seems like a revenge from wildlife for all the victims of the ruthless canine.
While the golden eagle feasts on the red fox in the alpine meadows, a fierce combat is being waged between two imposing mu deer weighing over 220 lb.
Using their large antlers as weapons, these colossal unullets fight for the right to mate with a female.
In a fight that can even last for hours, each contender pushes with all his might, trying to bring his opponent down or deliver a thrust with his sharp antlers.
After a relentless struggle, inevitably, one of the two males ends up giving in and yielding to his rival the highly desired right to procreate.
After achieving victory, the deer will emit a series of bellows that will attract the female who being in heat will be receptive to culation.
Although the defeated male must tolerate seeing how his adversary gets the females, the good news for him is that during the mating season does usually mate with several males, so he might have some luck.
As a species preservation measure, the mule deer does that did not get pregnant during these encounters will go into heat again in about a month, at which time the males that are attentive will be able to enjoy what is surely their favorite time of the year.
Since the gestation period is up to 200 days, there is still a long way to go before the thorns look at the wonders of the Yoseite ecosystem with their own eyes. So for now, the dough must continue with her routine.
Having overcome the tempestuous mating season in which males choose not to eat to focus all their attention on fights over females, these herbivores set out to regain all the weight they lost before the days of austerity arrive with winter.
The diet of the mule deer practically adapts to anything that appears in front of it.
This versatile herbivore is capable of eating shrubs, herbs, grasses, lychans, and even fruits.
This unulate, leaving all pretensions aside, will eat anything as long as it provides nutrients.
Since a prey of up to 198 lbs of fresh meat is the dream of countless predators in the wild, yuseite mule deer must be cautious to avoid becoming part of the diet of a voracious carnivore.
With coyotes and cougars trailing their footsteps, making just one mistake will mean paying with their lives.
With their discrete grayish brown coat, the deer hope to go unnoticed amid the thick vegetation.
Their slow and calm gate makes them draw as little attention as possible to avoid falling into the eyes of bloodthirsty predators.
Their senses of hearing and smell also play a central role in their survival.
Upon detecting the slightest sign that a stealthy killer is approaching, the mule deer will not stay to investigate thoroughly and will flee through the forest.
With their slender legs and powerful muscles, these unullet reach speeds of up to 45 mph.
When a predator starts a pursuit against an agile deer, one of the strategies they usually use to [music] escape is taking bounding jumps with all four legs.
This impressive display of agility besides distancing them from their pursuers is a clear signal that it is not worth chasing such a formidable prey.
While the physical skills and constant state of alertness of adult deer keep them away from most predators, the young are not usually so lucky and often become part of the diet of ruthless carnivores.
This is as long as their robust mother of over 198 lb is not nearby.
After giving birth, the dough usually keeps her young for hidden in a corner of dense vegetation and only visits it to nurse.
However, this worried mother will always stay in the vicinity of the thorn in case any predator dares to mess with her offspring.
Although female mule deer do not have antlers, nothing will stop an aggressive dough from protecting her offspring, charging with all her might, and delivering powerful kicks.
This upset mother is even capable of driving away bobcats and coyotes, thwarting their intentions to devour the thorn's tender meat.
Once the young calve can stand up, it will begin to discover this majestic ecosystem. Of course, always in the company of its mother, who will teach it to find water and food, as well as to detect predators and everything necessary to survive the bustling wildlife of Yusede.
Probably one of the first lessons the little deer will learn is not to get in the way of a giant dark beast weighing over 440 lb.
Walking slowly through the dense vegetation, the black bear wanders through the thick fur forests looking for food.
Although the diet of this fierce omnivore is based up to 80% on roots, bulbs, and tubers, the tender meat of a thorn is something it will not be able to resist.
After spending months underground, this fierce mammal emerges hungry in search of literally anything it can get into its stomach.
Since at the end of its long hibernation, the Yoseite ecosystem is just recovering from the sterile winter, the food supply is not very large, so it resorts to looking for food even under rocks.
Using its sharp shovel-like claws, the bear digs, looking for fresh shoots.
These, in addition to representing a food source available almost year round, provide important nutrients for these colossi.
After an extensive fast, the mammal loses huge amounts of fat and muscle that it will have to regain during [music] the spring and summer.
A good food source for those days when the yoseite vegetation [music] is barely recovering from the harsh winter are the carcasses of the victims of the freezing temperatures.
With the Thor brought on by spring, the snow retreats and reveals dozens of corpses that make the black bear not think twice about scavenging.
Despite having died weeks ago, the meat of these prey still remains fresh due to the low temperatures. So, the bear wastes no time and takes advantage of every last bite.
After finally putting something in its mouth, this black mammal can let the food settle for a while, for which the perfect place is none other than the comfortable branches of [music] trees.
The black bear is an exceptional climber capable of ascending tall trees in just seconds.
Thanks to its sharp, non- retractable claws and its powerful legs, even in the immense forests of Yoseite, there is practically no tree that [music] can resist the climbing skills of this agile mammal.
Already in [music] the comfort of the heights, the black bear usually relaxes grooming its fur, which by the way sometimes might not be black, but rather light brown, bluish black, or even gray.
To keep its dense fur clean, this neat giant usually spends up to hours giving itself long tongue baths, as well as rumaging through every part of its body, removing parasites and plant debris.
To clean those areas it cannot reach with its mouth or claws, it is common to see the bear rubbing itself over and over against the [music] trees.
While these rudimentary baths can keep its fur clean in case there is a stream nearby, the bear will not hesitate to dive [music] into it to take a refreshing dip.
Besides being a born climber, [music] this mammal also boasts enviable swimming skills, so it will have no problem plunging even into rough waters.
Although it is not as skillful a fisherman as the grizzly bear, if it comes across a fish during these relaxing baths, it will not hesitate to incorporate [music] it into its diet.
Every little [music] bit helps when it comes to recovering that massive size it had before the arrival of the winter scarcity.
While male bears can focus all their attention on feeding and spend hours grooming themselves for some female bears, life is not so simple.
At the same time, the males sank into a deep winter slumber. Pregnant females brought their tender cubs into the world.
These little cubs, weighing no more than 14 oz, will require the meticulous care of the mother bear, who will nurse them underground during the cold [music] winter months.
After weeks without even having seen the sunlight in their lives, with the arrival of spring, the [music] cubs emerge from their cozy den and discover a whole world full of life before their eyes.
Of course, being defenseless offspring, it is not at all advisable for them to explore this wild habitat alone. So, they usually stay close to their mother.
Although predators like coyotes, cougars, and even bobcats would be more than delighted to devour a small bear cub, often the worst enemy for the young comes from their own species.
Large male black bears view the cubs as an easy prey as well as a way to eliminate what in a few years could become their direct competition for resources.
Of course, the wild female will not [music] be very pleased with a ruthless bear wanting to mess with her offspring.
So, as one can guess, she reacts [music] entirely without gentleness upon seeing a threat of such caliber near the cubs.
With her overprotective mother [music] instinct, the black bear will pounce without hesitation against any male that attacks her little ones, being capable of even giving her life for the well-being of her cubs.
While most of the time males abandon their bloody intentions when they see the mother near the cubs, in some cases fierce clashes occur in which scratches and bites can turn [music] out to be lethal blows.
Fortunately, these fights are usually fleeting and each mammal prefers to go its own way, avoiding conflicts.
With the small bear cubs safely [music] back in the den, the sun begins to set behind the imposing granite mountains and nature prepares for one of the most impressive spectacles of all wildlife.
While wildlife appears in every corner of this privileged ecosystem during the day, the night is not far behind.
When darkness [music] takes over the valley, some creatures see their perfect opportunity to emerge from their daytime hiding places.
Under the cover of the moon, thousands of bats emerge from their roosts in the rocks caves and leafy trees to take to the skies of Yoseite.
This natural paradise is home to up to 17 different species of these flying mammals, so diversity overflows even in the dark.
From the little brown bat to the greater western mastiff bat, Yuseite harbors an unprecedented variety of these masters and lords of the night.
As soon as the sun gives way to the moon in the valley, these little flyers leave their quarters to look for food.
The species that inhabit Yuseite have a diet entirely based on insects and fruits. [music] So mammals wandering in the dark through the forest do not have to fear a voracious vampire sucking their blood.
To help them find juicy insects or fresh fruit bats, use their advanced biological radar.
By emitting ultrasonic pulses, these mammals can create a sonic image of their surroundings, being able to detect possible [music] food sources or threats in their habitat.
Although there is a belief that they are blind, the truth is [music] that no bat species is completely sightless.
However, their vision is highly questionable.
On the other hand, with such a precise geoloccation system, it is even possible for them to locate small termites, mosquitoes, moths, or beetles.
Since they have an insatiable appetite, each mammal manages to eat up to twice its own weight in [music] a single night. So, they will spend several hours navigating the skies of the valley in search of any small snack, no matter how tiny it is.
Although these nightly feeding sessions are a race against time, as it takes less and less time for the sun to rise again over the Rocky Mountains, [music] bats cannot make the grave mistake of letting their guard down.
The news of thousands of flying mammals filling the skies of Yusede [music] has reached unwanted ears, and predators do not delay in showing up for this appointment.
Since huge amounts of bats collapsing the skies are [music] a feast that no one wants to miss, countless carnivores wait for their chance to grab one. or if [music] lucky a few of these small night owls.
The bobcat is one of those carnivores that usually stays up late to wait for this spectacle of nature where any unwary bat flying low or having the misfortune of falling to the ground will become part of the feline's diet.
Another carnivore that is alert for the slightest opportunity to devour one of these little flyers is the wild gray fox, who as soon as he sees one of these mammals on the ground, will give it an immediate death with his small but sharp bite.
Given their long and thin wings, as well as having relatively weak legs, it is very difficult for bats [music] to take off from flat surfaces like the ground.
This means that when they have accidents during their night trips, taking flight again becomes a real challenge and they end up becoming a midnight snack for numerous predators.
But not even while in flight are they exempt from being on the menu of voracious hunters.
For owls, these countless colonies of bats are a real gift from mother nature and represent an unprecedented abundance of food.
In a matter of seconds, a defenseless [music] bat that was chasing an insect sees how the food chain turns against it and ends up in the talons of a hungry bird that is about to enjoy a good dinner.
Now, with most of the colony with full [music] stomachs and the sun approaching the valley, the bats seek to return to their roosts.
Since the heat of the day can overheat their tiny bodies, these sleepless mammals will flee in terror from the sunlight.
Another reason for their apathy towards the daytime shift of wildlife in Yoseite [music] is that while predators are numerous at night during the day, the number of hunters is abysmal, giving zero survival [music] chances to what would be easy prey.
Even upon arriving at their daytime shelters, bats cannot lower their guard.
Occasionally, intruders like raccoons and [music] snakes sneak into their layers and surprise these tired frugavores, causing chaos and taking several as prey along the way.
With the dawn, most of the wildlife in Yusede swings back into action.
While the bats can finally rest, squirrels emerge from their burrows and roam the thick forests in search of a succulent acorn or perhaps a bunch of fresh herbs.
Weighing approximately 10.6 oz and with a length of 11.8 8 in squirrels are part of those tiny wild inhabitants that make a place for themselves amidst [music] the bustling animal life of Yuseite.
One of the secrets of these [music] small rodents to manage to prosper in an environment that can be so hostile is their great capacity for adaptation.
Against all odds, squirrels enjoy a relatively comfortable life in what for them is an oasis on Earth.
One of the survival measures of these cute mammals lies in their diet. Since as the perfect example of an omnivorous species, they are capable of eating anything they find in their path.
From delicacies like nuts, seeds, and berries to simpler foods like leaves, shoots, and roots to true protein richch feasts like worms, eggs, or beetles, squirrels make no excuses when it comes to eating.
While bats use their amazing biological radar to find food, squirrels prefer to leave this whole task to their highly sensitive sense of smell.
Sniffing the fertile soil of the valley, these rodents find succulent snacks underground, scattered in the vegetation, or even high up in the trees.
Perhaps one of the best discoveries a squirrel can make on its long foraging trips are some fresh nuts.
Upon stumbling across this treasure, the little squirrel will immediately store them in its large cheeks where it [music] can transport them to its cozy home.
Given the variety [music] of squirrel species in Yoseite, it is practically possible to find them everywhere. From large colonies of up to 20 [music] mammals living in complex burrows to solitary individuals living like hermits [music] inside a comfortable tree.
Like beavers, when winter approaches, they have the task of collecting a sizable pantry to withstand the times of famine.
Every little berry or blade of grass counts when it comes to storing food for when sub-zero temperatures reach their corner of the valley.
After taking advantage of the cooler morning hours to collect a few nuts, these cute mammals usually take [music] a well-deserved break to regain strength during the hottest hours of the afternoon.
At these times of the day, it is common to see the squirrel resting curled up peacefully in its [music] nest or burrow.
Despite being a tireless worker, it also appreciates what a good rest is [music] sleeping up to 15 hours a day.
After a comforting nap, this rodent will leave its home again to increase its food reserves.
Since winter is approaching, Yuseite is no place to slack off as staying in its shelter during these days can pose risks if there isn't enough food.
Since their [music] appearance as a defenseless rodent is not particularly frightening on every expedition the squirrels make through nature, they must remain alert just as they are looking for food. The ecosystems predators are also hungry, and a small mammal of 10.6 oz of fresh meat is welcome to anyone.
The list of carnivores that would be more than pleased to devour a squirrel is practically endless.
From the majestic bald eagle through the intrepid bobcat to the bold red fox, no carnivore in this challenging ecosystem will turn down devouring a small proteinrich rodent.
However, even though their appearance does not [music] inspire much fear, squirrels will not let themselves be devoured without putting up a fight [music] or at least making their predators sweat.
Using their sharp eyesight, these rodents [music] detect even the slightest movement that occurs around them.
Thanks to having their eyes on the sides of their head, they possess a very wide field of vision that makes it quite difficult to [music] surprise them in a blind spot.
In addition to helping them hear even a nut falling from a tree, their sophisticated hearing allows them to hear any sound that might be suspicious.
Sometimes just the sound of quiet footsteps warns the rodent of the imminent attack of a fox.
Aware of their lack of ferocity, these compact mammals don't wait to find out and run straight to a safe place.
Thanks to their strong legs and athletic build, they can run up to about 20 mph through the forest.
To navigate the obstacles posed by the vegetation, [music] they use their bushy tail as a counterweight, which gives them enviable balance.
In case it gets cornered in treefilled forests, the squirrel will bring out its skills as a climber and find a safe place on the high branches.
Using its sharp claws, there is no tree that presents a challenge to its abilities.
When winter is about to set in [music] and food is not as abundant as before, these forward planning rodents begin to devour their pantry.
Some squirrels manage to hoard such plentiful reserves [music] of food that they do not even have to hibernate and spend all the winter months resting and enjoying the fruits of their labor.
While the little squirrel offers one of the cutest scenes in all of [music] Yusede's wildlife as it eats a tasty acorn deep on the scrubby slopes, the fierce mountain lion is moments away from demonstrating all its ferocity [music] embodied in a terrified prey.
For the cougar, these acts of extreme violence and savagery are nothing more than its daily life, standing as the apex predator of all yuseite.
Weighing up to 220 lb with a length of almost 10 ft [music] and a robust body that gives it a formidable appearance, this feline is the perfect prototype of a predator in an ecosystem where so many biomes come together like yuseite.
Dying at the hands of the fierce bite of a wild cougar is probably the greatest fear of all wild species throughout the valley.
With sharp canines up to 1.6 in long and a bite force of almost 900 lb per square in, this big cat's bite is capable of crushing bones with an impressive and at the same time terrifying ease.
As if that weren't enough, mother nature eliminating any chance of escape for its prey endowed the fierce mountain lion with sharp retractable claws up to 2 in long.
Using its muscular legs, the cougar can leap up to 16.4 ft horizontally and over 13.1 ft vertically, an ideal skill for its ambush hunting style.
Although they are capable of killing species such as big horn sheep, rabbits, hairs, marmets, or squirrels, the preferred prey of this relentless predator is the mule deer.
Although the cougar is a true killing machine, the mule deer will not become its prey without putting up a fight. So, the feline will have to show all its skills as a cold hunter.
Hiding among the vegetation, using its reddish brown fur as camouflage, the mountain lion goes completely unnoticed by its prey until it is too late.
Since it usually inhabits thick bushes, it is rare for this skilled feline to be cited without being immersed in a hunt.
Despite its colossal size and robust body, the cougar is a master of stealth that takes full advantage of its surroundings to hide until the moment of its attack.
Usually, the perfect victim is a distracted deer or small mammals unwarily looking for food without knowing precisely that they are seconds away from becoming part of the diet of the almighty predator of the valley.
From one moment to the next, the feline finds its chance and with a surprising leap, lands right on its prey, pinning it down with its sharp claws and not delaying in ending the hunt with its fearsome bite.
When it comes to small prey like squirrels or marmmets, a well-d delivered paw strike is enough to kill the animal that is soon to be a fresh meal.
Some slightly more voluuptuous prey like big horn sheep or red deer will require more effort from the feline, but nothing it cannot handle with its imposing skills as a predator.
Since even the appetite of this voracious hunter has its limits, the cougar's daily nutritional needs are usually about 15.4 lb of meat.
When it manages to hunt larger prey, it generally eats all it can and leaves [music] the rest since it prefers fresh meat. Perhaps one of the luxuries it can afford by being the only apex killer in Yusede.
Despite being a cruel predator [music] that instills fear in all animal species in its ecosystem, no one says that this ruthless feline cannot enjoy leisure time.
After demonstrating the greatest of savagery, the cougar usually rests in a cozy place, such as on tree branches, a corner of dense vegetation, or in crevices among rocks.
Another of its favorite pastimes is basking in the sun for long periods of time.
This is a behavior that in addition to giving them a moment of relaxation, allows them to keep their bodies warm and absorb a dose of vitamin D.
While sunbathing, it is common to see this bulky cat grooming every part of its fur with its tongue and claws to prevent the establishment of parasites.
In addition to being a bloody predator except during the breeding season, the cougar is completely antisocial and does not tolerate the intrusion of other peers into its corner of the valley.
Each feline can dominate even vast expanses of up to 38.6 square miles where they are free to hunt and take the females they find there.
To mark out their domains, the felines mark their territory using urine feces and leaving scratch marks on trees.
Often, as long as no cougar invades another's territory, the valley can remain in peace, of course, except for their displays of extreme ferocity on defenseless mammals.
The problem arises when a scarcity of prey grips the ecosystem and some felines in search of better hunting opportunities decide to expand their domains.
Confrontations between cougars are among the bloodiest in all wildlife.
No mountain lion will give up even 3 ft of its territory without putting up a fight. So violence is more than guaranteed.
Upon meeting at the borders of their domains, each predator will show its ferocity by emitting growls and snorts as well as bearing its sharp teeth.
This is merely a precursor to the wild duel that is about to take place.
Body postures as well as remarking their territory are other behaviors that can be the prelude to an unprecedented battle.
When deterrence attempts fail, the felines with no other choice lunge their robust bodies at their opponent.
Here, paw strikes aim directly at the face and bites to the neck and backer everywhere.
In these altercations, one of the felines often gets seriously injured.
Although the combat does not usually last many minutes, [music] every second is fought with ferocity and with blows that threaten the opponent's life.
After a few rapid charges, one of the cougars decides to back down and accept defeat.
To express its surrender, the defeated feline will adopt a [music] submissive posture, exposing its belly and crouching down.
After this setback, [music] the feline will avoid future conflicts with the now dominant male and will retreat back to [music] its territory, abandoning all its ambitions for expansion and taking away a few wounds as a souvenir.
While cougars fight to the death [music] for every inch of their territory in Yoseite, other species view the valley's blessed ecosystem merely as a momentary stop on a long journey.
For monarch butterflies, Yuseite represents one of the many places they will visit on their challenging trek, fleeing the low temperatures of winter.
While the monarch butterfly populations on the east coast face a longer journey south towards central Mexico, the western colonies prefer the Californian coasts as their warm winter refuge [music] for which they will have to stay at least momentarily in the cozy ecosystem of the Yoseite Valley.
With beautiful orange wings and black lines, these lepodopterant insects are among those species that express the full biodiversity of this ecosystem.
Although the west coast migration is not as massive as the journey of the eastern colonies, [music] it still involves significant challenges.
The abundance of flowers during spring and summer in Yoseite [music] represents an endless feeding feast for these tiny wild migrants.
Each flower provides a small dose of delicious nectar that gives them enough energy to continue their long journey.
The main plant species they feed on are wild lilac golden rod thistle or of course milkweed.
The latter plant, besides serving as food, is the perfect place to lay their numerous eggs.
If they are lucky enough to find milkweed during their passage through Yuseite, the monarchs will be able to prolong their stay in this generous ecosystem a bit by laying their eggs.
The gestation of these little orange ones is perhaps one of the most fascinating in the entire animal world.
Throughout the breeding season, each butterfly is capable of laying up to hundreds of eggs on the leaves of esipias, better known as milkweed.
These numerous little eggs in just 5 days will hatch and give way to a hungry caterpillar that will feed on the very plant that provides it with shelter.
With a full stomach, the caterpillar passes to a pupil [music] stage, which is when it encloses itself in a small cocoon where it will spend up to 15 days until it becomes a fully developed adult butterfly.
A few days after its birth, with no time to lose, the young monarch butterfly [music] must begin its journey to the Californian coast where temperatures will be much more pleasant and they will be able to hibernate comfortably.
Of course, before leaving, they can enjoy the abundance of flowers that yuseite offers them a little longer.
The passage of [music] species like monarch butterflies through this ecosystem is vital for the pollination of thousands, if not millions of plants.
These orange flers are also a true reflection of the health of the biomes because if an ecosystem is [music] healthy, they will inevitably show up in their hundreds of thousands to enjoy all that natural abundance.
Just as monarchs find an almost unlimited source of food in Yoseite, [music] being at the lowest rung of the food chain, the species that view these flyers as a substantial food source are numerous.
From orb weaver spiders to field mice and even other insects [music] like dragonflies and preying mantises, all will take their share of the colony along the butterflyy's [music] migration during their stopover in the valley.
During their amazing yet delicate [music] gestation cycle, the eggs can also fall prey to ants, bugs, and wasps.
Thanks to their early diet based primarily on [music] milkeed, a highly toxic plant, they can protect themselves from some of these natural enemies.
When, for example, a bird devour a monarch butterfly, as soon as it ingests [music] it, the toxin accumulated in its body can cause vomiting arhythmias or even death. So, if it survives, it will learn not to [music] mess with what seem to be defenseless insects.
Unfortunately for [music] the monarchs, not all their predators are sensitive to this toxin, and some will enjoy devouring these colorful [music] insects over and over again.
After this stop [music] in Yusede, the butterflies will continue on their way to the coast where they will stay for months, taking advantage of the warmer temperatures.
Of course, on the return journey, they will not forget [music] the hospitality this welcoming valley has shown them and will stay again for a few days.
Despite being threatened by an infinite number of predators, mother nature showing a hint of mercy did not place monarch butterflies in the crosshairs of one of the fiercest killers in all of Yusede.
Even the feared foxes and bobcats flee in terror from the inevitable bite of the wild coyote.
Weighing about 44 lbs and measuring 4.9 f feet in length, this fierce canine is one of those predators that gives no quarter to the countless species below it in the food chain.
Squirrels, marmmets, rabbits, hairs, deer, and even birds are in the spotlight of this ruthless wild dog that will not hesitate to attack anything that moves in its surroundings.
Capable of living in various areas, the coyote's territory ranges from warm valleys surrounded by mountains to [music] alpine areas over 9,842 ft above sea level.
Thanks to its dense grayish brown fur, the coyote can go completely unnoticed walking through nature.
Although some canines group together in small packs, the vast majority of these wild dogs prefer to lead a solitary life with no more company than their unfortunate prey.
Although with its lethal bite and agile body very similar to wolves, the coyote looks like a strict carnivore, the truth is that in a display of its admirable ability to adapt to the inclement conditions of wildlife, this mammal is omnivorous, even enjoying juicy berries when the situation calls for it.
In an unprecedented contrast, this feared canine can be seen disembowing [music] red deer as well as tasting fresh white cedar leaves.
Of course, to keep its robust body in shape, it will always prefer to maintain a high protein carnivorous diet.
While family groups of coyotes plan elaborate hunting strategies to surround their prey, solitary dogs rely on complex ambushes to surprise their victims.
Unlike felines, such as bobcats or cougars, which use their claws to launch paw strikes capable of killing their prey, coyotes use them to dig and reach rodent burrows.
In just seconds, these canines can launch surprise raids on field mice or squirrels that thought they were protected in their underground shelters.
Just as they impose their ferocity on small rodents, coyotes do not spare unwary birds that make the mistake of flying low over the dangerous yuseite.
Leaping up to 13.1 ft high, the canine snatch with their agile bite. Any bird that until seconds ago was enjoying a pleasant [music] day in this ecosystem that can be benevolent, but at the same time ruthless.
Although these hunts are surprising, the greatest acts of savagery by the coyote are evident when they set their sights on medium-sized mammals such as deer.
Here, hidden among the bushes, without its presence being [music] noticed, the dog waits for the right moment to chase the small unulate.
Often, thanks to its striking stealth, it manages to get just a few feet away from its surprised prey, who will not be able to do anything but let itself be taken down by its lethal bite.
Despite being accustomed to quick and accurate attacks, if the situation warrants it, the coyote can engage in rapid sprints through the forest, reaching speeds of up to 37 mph.
No deer or fox, try as it might, can escape a run of such proportions. Even with its life on the line, the coyote's ferocity leads it to be the nightmare of even such bulky prey as a large black bear.
The relationship of these dark furred beasts with the wild coyotes is a true struggle of power against power. Since bears, if they see the opportunity, will not hesitate to kill the canine's pups.
While in times of scarcity of small prey, coyotes see these large mammals as a good food source.
Although day after day the fierce coyote stands as the executioner of countless species, every now and then a wild cougar crosses its path to remind it that it is not the absolute king of the valley.
And in an act of dominance and cruel reality, the mountain lion ends up with one of these dogs between its teeth.
Despite being a raw scene, it is nature in one of its highest expressions and the graphic representation of the survival of the fittest. where the cougar positions itself as the apex predator of the entire valley.
Unfortunately, there is a predator that year after year claims up to 30% [music] of coyote deaths in Yoseite. And it is not exactly the feared feline.
As a result of illegal hunting, vehicular strikes and trash ingestion, approximately 60 of these majestic canines die each year in this ecosystem.
But the wild coyote is not the [music] only species affected by human influence within Yusede.
For black bears, habitat fragmentation caused by roads and ecosystem deterioration resulting from tourism waste are an unprecedented threat.
It is estimated that 90% of black bears that consume human food end up dying before reaching 10 years of age, just a third of their estimated [music] lifespan.
Not even the almighty cougar is exempt from the challenges posed by the encroachment of human activities [music] in Yoseite.
Although hunting this wild feline is completely prohibited and even punishable [music] by fines of up to thousands of dollars and a year in jail, this is no deterrent for illegal hunters who dare to attempt against the life of this imposing feline.
Today it is estimated that the number of free cougars in Yuseite amounts to only about 100 individuals raising alarms about their preservation.
Without the presence of predators such as the fierce mountain lion, the coyote, or the red fox, the entire delicate balance of this ecosystem could be compromised, which would represent a challenge of colossal proportions for the preservation of this wildlife refuge.
Therefore, Yuseite needs our help.
With greater awareness about the preservation of its animal species and a sustainable practice of nature, tourism, this paradise in the heart of North America can continue to be a sanctuary for wildlife.
Have you been fascinated by the [music] wildlife stories of the majestic Yoseite?
Then click the like button and comment on which wild species has been your favorite.
Also, if you are interested in supporting the preservation of the fauna of this earthly paradise, you can share the video with your friends.
Don't forget to click the bell button to stay up to date with our next videos.
Without further [music] ado, see you next time with more tales of wild lives.
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