A Musk Ox Mother Gives Birth in snow … But Her Newborn Must Survive −20°C | 4K Wildlife Documentary

The arctic morning is silent. Only the wind moves across the frozen tundra. On a ridge where the snow is thin, a herd of muskoxen is searching for food. But among them, one heavily pregnant female has stopped eating. The calf she carried through the entire winter is finally ready to be born. And somewhere beyond the white horizon, wolves are following the herd. For now, they remain too far away to be seen. The mother lowers her broad mouth toward the exposed sedges, but does not begin feeding. Her breathing is deeper, her tail moves slightly away from her body, and every few moments she becomes completely still. Inside her, a single calf is fully developed. It may weigh little more than 10 kilograms. Its legs are already formed. A reddish-brown coat covers its body. And beneath that coat, a layer of brown fat is prepared to generate heat. But none of these protections will be enough if the newborn cannot reach its feet. It will enter the world wet, unsteady, and unable to escape anything. Within its first hour, it must begin breathing, stand, and find its mother's milk. Then it must remain close enough to move with the herd. Because on this open tundra, there is nowhere for a newborn to hide. The mother takes one slow step forward, then stops again. The wolves continue following the tracks behind them. And before this arctic morning is over, a new life must be ready to follow animals many times its size. Around the mother, the herd continues moving slowly across the ridge. Each animal remains close to the others. From a distance, they appear more like dark rocks than living animals. Their long coats hang almost to the ground, hiding much of their bodies beneath a curtain of hair. These outer hairs protect them from wind, snow, and freezing rain. But beneath them lies something even more important. A dense layer of soft underwool known as kiviut. It traps warm air close to the skin, allowing muskoxen to survive temperatures that would quickly overwhelm many other large mammals. Their bodies are also built to conserve heat. Their ears are small. Their tails are so short that they remain almost completely hidden. And their heavy, compact shape exposes less of the body to the arctic wind. Despite their name, muskoxen are not closely related to domestic cattle. They belong to the same wider family as sheep and goats. But there is little about them that appears fragile. Adult bulls may weigh more than 300 kilograms. The females are smaller, but still powerful. And unlike many other hoofed mammals, both males and females carry horns. The bull's horn bases form a thick shield across his forehead. The females are narrower, but sharp enough to drive back a predator. Yet horns alone are not what make these animals so difficult to attack. Their greatest defense is the herd itself. When danger approaches, the adults do not simply scatter. They gather. They turn toward the threat. And they place the youngest animals behind their bodies. For the unborn calf, that protection is already waiting. But before it can take its place among them, it must survive the journey into the frozen world. A journey that began eight months earlier, during the brief arctic autumn. During the brief arctic autumn, the tundra looked very different. Snow had not yet covered the ground. Fresh sedges filled the valleys. And across the open landscape, the musk ox rut had begun. A mature bull moves slowly among the herd. His body is larger than the females around him. The heavy horn bases across his forehead reveal his age. And a strong scent carries from his coat as he passes. He raises his head, testing the air. Then begins following one female. She's the same mother now, standing on the frozen ridge. For several hours, the bull remains near her. He follows when she moves. Stops when she stops. And gently brings his nose close to her body. Learning whether she is ready to mate. Eventually, she allows him to approach. Their time together is brief. No permanent bond forms between them. Once the mating season ends, the bull no longer remains constantly beside her. He will not feed the calf. He will not guide it. And he will never care for it as an individual father. From this moment forward, the growing life inside her will depend almost entirely on the female's body. A fertilized egg begins developing within her uterus. At first, it is almost impossibly small. But as the arctic autumn fades, the connection between mother and calf begins to strengthen. Through the placenta, oxygen and nutrients pass from her body into its own. Its heart begins beating. Its limbs start forming. And while the first snow settles across the tundra, the mother enters winter carrying a life that will not emerge until the light returns. For the next several months, the mother carries her calf through the arctic winter. The days become shorter. Then, in the far north, the sun disappears below the horizon for weeks at a time. Temperatures fall. Strong winds sweep across the open tundra. And the vegetation that sustained the herd during autumn vanishes beneath the snow. Musk oxen do not escape winter by traveling thousands of kilometers south. Instead, they remain in the arctic. The herd searches for ridges and exposed slopes where the wind has kept the snow shallow. The mother uses her broad front hooves to break through the surface. Beneath it, she finds dry sedges, grasses, and the stems of low arctic plants. They provide little energy. But for now, they are enough to keep her moving. Inside her body, the calf continues growing. Its legs lengthen. Its reddish-brown coat begins covering its skin. A soft layer of baby civet develops beneath it. And stores of brown fat prepare the newborn to produce heat after birth. But everything the calf receives must first come from its mother. As winter continues, her stored fat slowly disappears. Finding food becomes more difficult. Sometimes, warmer air brings rain instead of snow. The water passes through the surface, then freezes into a hard layer of ice. The vegetation remains beneath it. Close enough to smell, but too difficult to reach. For a pregnant female, several days without enough food can affect more than her own survival. It can reduce the growth of the calf, weaken her ability to produce milk, and determine whether the newborn will possess enough strength to stand. In favorable years, a healthy female may produce a calf every spring. But after a severe winter, some females do not have enough energy to reproduce again. This mother has already carried her pregnancy too far to turn back. By late winter, her body is supporting a calf that is nearly fully formed. Then, slowly, light begins returning to the tundra. The sun rises higher each day, but the snow remains. The wind is still freezing. And as the Arctic enters spring, the mother approaches the most demanding moment of her pregnancy. Across the Arctic, spring does not arrive all at once. The daylight returns first. Then patches of exposed ground begin appearing between the snow. But freezing winds can continue for weeks. And during this uncertain season, muskox calves begin entering the world. The herd has reached a low ridge where the snow is thinner. Most of the animals lower their mouths toward the exposed vegetation. The pregnant female does not. She takes several slow steps away from the feeding adults. Then stops. Unlike many hoofed animals, a muskox mother does not normally travel far from her herd to give birth. On this open tundra, isolation would leave both her and the newborn exposed. The nearby adults provide safety, but they cannot help with the labor itself. The mother raises her head. Her nose tests the wind. Her ears turn toward the quiet sounds around her. Nothing appears close enough to threaten the herd. She lowers her mouth again, but still does not feed. Then, the muscles along her abdomen tighten. Her body becomes still. Her back arches slightly. And a deeper breath passes through her nostrils. The first contraction lasts only a short time. When it ends, she begins walking again. She circles behind two resting females. Then stops near the edge of the group. Several quiet minutes pass. From a distance, she appears calm. But then her tail lifts. She shifts her weight from one back leg to the other. Now the contraction begins. This one lasts longer. Her abdomen tightens beneath the heavy coat. Her breathing deepens. But she makes almost no sound. When the pressure finally eases, the mother remains where she is. She does not return to feeding. The quiet intervals are becoming shorter. After eight months of pregnancy, her body is beginning the final work of bringing the calf into the Arctic. Another contraction begins before the mother has fully recovered. Her tail rises again. Her back legs move slightly farther apart. And for several seconds, every muscle along her abdomen remains tight. When the pressure passes, she takes only a few steps. Then her front knees begin to bend. Slowly, she lowers her heavy body onto the frozen ground. The other muskoxen remain nearby. Some continue feeding. Others raise their heads briefly, then settle again. The mother lies on one side. Her chest rises and falls. For a short time, nothing changes. Then a stronger contraction moves through. She lifts her head. Her legs press firmly against the ground. And the muscles beneath her coat tighten once more. The final moments of the delivery remain hidden behind her body. And the long curtain of hair surrounding it. Only her breathing and the repeated tension along her abdomen reveal what is happening. Then, after one last effort, her body begins to relax. The mother remains still. Her breathing slowly becomes quieter. She raises her head and turns toward the ground behind her. Something small is lying there. A single newborn calf. Its long legs are folded awkwardly beneath its body. Its reddish-brown coat is dark, wet, and pressed tightly against its skin. For one uncertain moment, the calf does not move. The freezing air is already pulling warmth from its body. The mother brings her legs beneath her, then pushes herself upright. She turns immediately. For her, the labor has ended. But for the newborn lying at her feet, the struggle to survive has only just begun. The mother steps toward the motionless calf. She lowers her broad nose and begins sniffing along its back. Then its neck. And finally, its face. The newborn remains pressed against the frozen ground. Its eyes are closed. Its ears lie folded against its head. And its wet coat provides far less insulation than it will once dry. The mother begins licking. Her tongue moves across the calf's nose, clearing away the moisture around its nostrils. Then she presses the front of her mouth gently against its head. Once. Then again. For another moment, nothing happens. The mother continues licking along its body. This helps remove moisture. And encourage the newborn to respond. Then one ear moves. A nostril opens. And the calf's chest rises slightly from the ground. A small breath enters its lungs. It is followed by another. Then another. Inside its body. Stores of brown fat begin producing heat. But the calf still needs its mother's warmth. It moves its head toward her familiar scent. Then releases a faint, high-pitched bleat. The mother reacts immediately. Her ears turn toward the sound. She lowers her face again. Touching the calf gently with her nose. Through scent, sound and physical contact, the bond between them is beginning. The calf lifts its head. Its neck shakes beneath the weight. After several seconds, the head drops back onto the earth. But almost immediately, one of its long front legs begins to move. Breathing was only its first challenge. Now, the newborn must find a way to stand. The calf draws one front leg beneath its chest. Then slowly, the other follows. Its head rises first. Its chest lifts a few centimetres from the ground. But the back legs remain stretched behind its body. The newborn pushes harder. For a moment, its front knees support the weight. Then they collapse. The calf falls onto its side. The mother lowers her head immediately. She sniffs along its back. Then presses her nose gently against its shoulder. The newborn moves again. It brings both front legs beneath its chest. And begins a second attempt. This time, the chest rises higher. One front leg begins to straighten. Then the other. But its hindquarters remain close to the ground. The calf twists its hips, trying to pull the back legs forward. One back foot finds the earth. The other slides across the frozen surface. Before the newborn can recover, its front knees buckle again. It returns to the ground. The mother cannot lift it. She cannot place its feet beneath its body. And she cannot teach it how to balance. But she remains beside it. Shielding part of the wind with a coat. For a short time, the calf rests. Then its head rises again. Both front legs move beneath the chest. The newborn pushes forward for a third time. Its front legs straighten. The hindquarters slowly rise behind them. And for the first time, all four feet touch the ground. But they are too far apart. The calf's knees tremble. Its body sways from one side to the other. One back foot begins sliding outward. For a moment, the newborn appears certain to fall. Then it shifts its weight. The slipping foot moves back beneath its body. And somehow, the four legs remain upright. The calf stands with its head lowered. Its body continues rocking as it searches for balance. The mother brings her shoulder close. The newborn leans against her, using her enormous body for support. Only a short time after taking its first breath, the smallest member of the herd is finally standing. But the effort has consumed much of its remaining energy. And now, another instinct is beginning to take control. The calf remains pressed against its mother. Its legs are still trembling. But the scent of milk draws its head beneath her long coat. At first, the newborn searches in the wrong place. Its nose presses against the mother's front leg. Then moves along the thick skin beneath her abdomen. The search is instinctive. But the calf has never fed before. For several seconds, it tries to suckle a fold of skin beneath her belly. Nothing happens. The mother remains still. The calf moves farther beneath her. Until its head brushes against one back leg. She shifts her weight. Then places that leg slightly farther outward. Creating more space for the newborn. Hidden beneath her coat, the mother's udder carries four teats. The calf's nose finally reaches them. It nudges once, then turns its head in the wrong direction. The mother looks back, but does not move away. The calf searches again. This time, its mouth closes around one teat. For a few seconds, its movements remain uncertain. Then the first milk begins to flow. The newborn's jaw starts moving in a slow, steady rhythm. Its small tail lifts behind it. This early milk is known as colostrum. It is thicker and more concentrated than the milk the mother will produce later. It provides the energy the exhausted calf needs. But it carries something even more important. Before birth, the calf was sheltered from much of the outside world. Now, bacteria and other microorganisms surround it. The antibodies in the colostrum help prepare its developing immune system for these new threats. The calf continues feeding. Its legs still tremble occasionally, but the mother's body supports it. Only a short time after learning to stand, the newborn has found its first meal. And with new energy entering its body, it may soon be strong enough to follow the herd. After several minutes, the calf releases the teat. It remains beneath its mother for a moment, resting against her body. Around them, the other muskoxen begin moving. The exposed plants on the ridge have provided only a small meal. To find more, the herd must continue across the tundra. One adult steps forward, then another. Soon, the entire group begins travelling toward a distant slope, where the wind has cleared more snow. The mother remains beside her calf. She waits until the newborn moves out from beneath her coat. Then she takes one slow step. Her support disappears. The calf sways, but stays upright. It lifts one front foot, places it down, then moves the other. Its back legs follow awkwardly, landing too close together beneath its body. The calf completes one step, then another. On the third, its front knees buckle. It drops onto its chest, but does not fall completely onto its side. The mother stops immediately. She looks back, waiting only a few steps ahead. The newborn stretches its neck toward her. Its front legs press against the ground. And with a sudden effort, it pushes itself upright again. This time, it moves more carefully. One uncertain step at a time, the distance between them closes. The mother keeps her pace slow. Whenever the calf falls behind, she stops. Whenever it reaches her, she begins moving again. Other members of the herd pass close beside them. Their enormous bodies shield the newborn from part of the wind. While keeping it away from the exposed edge of the group. Within only a few hours of birth, the calf has left the place where it first touched the earth. It is walking, it is feeding, and it is beginning to move as part of the herd. But every step has consumed energy. As the afternoon light fades, the temperature begins falling again. The newborn has survived its first day. Now, it must endure its first arctic night. The sun sinks below the horizon. Almost immediately, the warmth of daylight disappears. Wind moves across the tundra, lifting loose snow around the herd's legs. The muskoxen stop inside a shallow depression. Here, the ground offers some protection from the strongest gusts. One by one, the adults lower their bodies onto the snow. The calf remains standing beside its mother. Its coat is no longer wet. As the reddish-brown hair dries, the soft layer beneath it begins trapping warmth close to the skin. But the newborn is exhausted. Its front knees bend, then its back legs fold beneath its body. Slowly, the calf settles against the mother's long coat. For a time, she remains standing over it. Her body blocks the wind, while her ears continue turning towards sounds in the darkness. Eventually, she lowers herself close beside the calf. The newborn presses against her. Several times during the night, it wakes. It pushes itself upright, moves beneath her coat, and drinks again. Then it returns to the ground. Around them, the herd rests close together. But not every animal sleeps at the same time. A head rises, a nose turns into the wind. Then, from somewhere beyond the darkness, a wolf calls. Another answers from farther across the tundra. The mother lifts her head. Other adults rise around her. For several moments, the herd listens. No movement appears. The wolves are still too far away to attack. Gradually, the muskoxen settle again. The calf remains hidden beside its mother, surrounded by bodies far larger than its own. Protected from the wind and from whatever may be moving beyond the darkness. The newborn survives its first arctic night. Morning light returns to the tundra. Beside its mother, the calf raises its head. Its first night is over. The mother is already standing. And after feeding once more, the newborn unfolds its long legs. This time, it rises more easily. Its knees still tremble, but its feet find the ground more quickly than before. As the herd begins moving, the calf follows. It remains close to its mother's side, protected among the larger bodies around it. Over the following days, its movements become stronger. The calf walks farther, runs for short distances, and begins exploring the ground beneath its feet. It lowers its mouth toward the exposed sedges, tasting the plants its mother is feeding on. But grass cannot yet provide everything it needs. For many months, the calf will continue depending on her milk. Other newborns remain close to their own mothers. Sometimes, two calves approach one another. They touch noses, then move awkwardly across the tundra together. But whenever the herd begins traveling, each calf returns to the female whose scent and call it recognizes. The newborn is also learning to follow the movements of the group. When one adult suddenly raises its head, the others stop feeding. Ears turn toward the wind. Calfs move closer to the center. Only when the adults relax does the herd begin grazing again. These signals may one day save the calf's life. Because the wolves have not disappeared. One morning, fresh tracks cross the snow near the herd's resting place. They lead toward a distant ridge, then vanish beyond it. The tracks belong to a wolf. And before long, a dark shape appears beyond the ridge. It stops against the pale horizon, watching the herd below. The muskoxen have already detected it. One adult raises its head, then another. Within seconds, the entire herd stops feeding. The calf hears a low call from its mother. She turns toward it, guiding the newborn closer to the other young. Around them, the adults begin closing the open spaces. Their bodies move together, shoulder beside shoulder. The youngest calves are pushed into the protected center, while the horned adults face outward. The wolf begins moving along the edge of the herd. It is searching for hesitation, a gap, or one frightened calf separated from the others. But the muskoxen do not run. Their strength comes from remaining together. The mother stands between her calf and the approaching predator. Beside her, a large bull lowers his massive head. The wolf steps closer. Several adults move forward at once. Their horns point toward it, and their heavy hooves strike the frozen ground. The predator stops. For several moments, neither side moves. Then the wolf turns away. It walks back toward the ridge, pauses once to look behind, and disappears across the tundra. The adults remain in formation. Only after the last movement has vanished does the herd slowly begin to relax. The mother turns toward her calf. It presses against her body, then reaches beneath her for milk. Only days ago, this newborn entered the Arctic unable to stand. Now, it can walk with the herd, recognize its mother's call, and find safety behind a living wall of muscle. Horns and ancient instinct. But winter will return. The wolves will continue following, and countless dangers still wait across the frozen north. Today, the calf has survived. Tomorrow, it may have to do so all over again.