Property owners need to secure their properties in bear country. One of the most incredible occurrences during hibernation is the birth of a bears cubs. As humans, hibernation may seem like an impossible task, or it might seem useless to us because we enjoy year-round activities. Black bears will reemerge from hibernation in the springtime, when the snow melts, usually around April. Pennsylvania's bear population has been increasing for decades, and at the same time, many people have moved into the areas where bears reside. They weigh between 7 and 10 pounds as they bounce and tumble over each other. Delayed implantation postpones investment in a pregnancy until after the critical fall foraging period as the bears gorge on autumnal food. Alaskan brown bears, for example, hibernate for a whopping eight months out of the year in some cases. For implantation to be successful, the female needs to weigh at least 110 pounds by late fall. That was down from 2019's record of 4,653, but still the second-largest harvest in the past five years . Bears make their dens in hollow trees or logs, under the root mass of a tree, in rock crevices, or even high in a tree in warmer climates. If you have pets, bring their food pans inside at night. Grizzly bears typically hibernate between five to seven months. You may need to talk to your neighbors, as well. This is because bears bodies dont give up proteins or muscles as they hibernate. Generally the bears come out of hibernation when food starts popping up out of the ground in the form of vegetation, grasses, and especially this time of year, skunk cabbage, William Williams, information and education supervisor for the Pennsylvania Game Commission, Northeast Region, said. In January the cubs are born, and they spend their first few months in hibernation with their mother. The more northern the bear, the larger the plug! Its possible that bears have an internal clock. Bears that become accustomed to people can be attracted into backyards if food is present. Therefore, hibernation is very instinctual for them. Different species of bears hibernate for slightly different lengths of time, based mostly on their climate. They sleep almost all day near the water, too, and their heart rate slows considerably. Bears typically den (hibernate) in fall (late October-early December) and emerge in spring (March-April). The home range of a female black bear is typically 2.5 to 10 square miles (6.4-25.9 square kilometers). Bats that choose to remain in cold places to hibernate are most likely to hibernate in dark wall spaces or quiet and/or remote caves. They may occasionally eat a little snow and urinate outside the den, but generally they do not eat or drink during hibernation. Bears are powerfully built animals. Every bear encounter is different. When people defined hibernation simply in terms of temperature reduction, bears were not considered hibernators. It results in the synchronized births of thousands of black bear cubs born in Pennsylvania each year, in the safety of protective dens. They need to put on weight to prepare for winter and hibernation. Wild bears rarely attack people. Bears do not eat, drink, defecate, or urinate while hibernating. If you have stumbled upon a bears hibernation den and caused them enough alarm to awaken them, it would most definitely set them off, leaving you in a dangerous situation! Although bears appear lethargic during hibernation, they are easily aroused and capable of fleeing. This generally begins in the autumn, and they emerge from their dens in the spring. This is done by intaking plants that the bears knowingly cannot digest. Though they are dormant through this task, it is quite involved and extremely vital to the survival of bears. In Springtime, Bears Emerge From Their Dens Male grizzlies come out of hibernation in mid to late March. Bears drink water frequently and, in hot weather, they wallow in streams. Just because they are sleepy does not mean they arent cranky! Bears usually rely on their acute sense of smell and, to a lesser degree, hearing, to locate food and danger. If a black bear attacks, fight back. 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Other animals that experience torpor the same way bears do include skunks and raccoons. Bears that learn to forage on human-provided foods often become nuisances, causing property damage and increasing the risk of a human-bear encounter. Typically, a bear will assume hibernation in October or November, staying put for an average of five months. However, bears keep fed one way or another, eating hundreds of thousands of berries if they need to fulfill their calorie intake. Sean Farley, research biologist and bear specialist at the Alaska Department of Fish and Game, explains, "Not all bears hibernate, but in Alaska, most bears do, including the males. Once bears find easily accessible food sources, whether on a farm or in a housing development, they will keep coming back as long as food is available. Although bears arent eating, urinating, or defecating during hibernation, they also dont sleep every minute of it. A bear in hibernation still has a body temperature of 88 F (31C). They eat lightly as their metabolism picks up speed again. Many brown bears do hibernate, especially if they are in cooler climates or habitats. As the season flourishes and turns to summer, the bears gain their usual strength and energy. Because brown bears are the most widely dispersed species of bear on the planet, the possibilities for where they build their dens are endless! When this state lasts longer than a 24-hour period, it is then considered hibernation. Placing food out for bears, even if intended for other wildlife, can be particularly troublesome. A sow and three cubs left on March 24, 2021. Hibernation can last days, weeks, or months depending upon the species. However, she might fall back into torpor as her young nurse on her. Black bears will eat human food, garbage, bird feed, pet foods, fruits from trees or gardens, and livestock feed. Bears have five toes. They undergo the same instincts leading up to hibernation, displaying that its a natural process, and bears innately understand this. "The sow will. Depending on snowfall, temperature and food supply, bears get ready for winter hibernation in late November. Talent Mobility: The Key to Organizational Success, Dippin Designs revolutionizes egg decorating with, Nicole Byer & Echo Kellumof NBCs Grand Crew talk, Agnes at Fifty: A look back at the flood of 1972, 5 fun crafts for kids on St. Patricks Day, Inspired by the Iditarod race? Here's a fun trivia fact - newborn bear cubs don't hibernate at all. There are five stages to Bear Hibernation. Do bears hibernate? Other brown bears will only hibernate for about five months on average. The birds can sleep for weeks or even months until spring. Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. And, all too often, The indigestible plants purge the digestive system and throughout the months of hibernation, feces, intestinal secretions, plant matter, and even hair (from licking themselves) is gathered in the bodys lower intestines, forming a plug in their bodies. Some bears, including females with newborn cubs, may simply den in an open nest on top of the ground. Download the official NPS app before your next visit. Shell have a better chance of birthing more cubs, healthy ones, too, if she bulked up well in the fall. Pregnant bears will give birth to their cubs in the den, most likely within the first two months of hibernation. Do not deliberately approach a bear or attempt to entice one closer. Population trend and harvest levels are closely monitored annually. Grizzlies may hibernate between five and seven months, re-emerging in days anywhere between March and May. Friday, March 8, 2019 The Pennsylvania Game Commission is operating a live webcam of hibernating bears. March 20, 2022. They weigh between 7 and 10 pounds as they bounce and tumble over each. It's also easy to recognize a black bear's sizeable droppings of partly digested berries, vegetation, corn or animal hair. Bears also enter a state of dormancy when pregnant females give birth and during periods of food scarcity. Electric fencing can also be used to protect fruit trees and gardens. By the time the bear cubs emerge from their winter dens for the . Instead, intestinal secretions and cells continue to shed during hibernation, making poop even if the bear has had nothing to eat. In the spring, when the snow begins to melt, the bears will wake up and emerge from their den in search of food again. Nurtured with the sow's rich milk, they grow from as light as 10 ounces at birth to as much as 10 pounds by the time they leave the den in early April. Torpor is a shorter-term comatose-like state that is experienced daily along with the drop in metabolism, temperature, and heart drop to accompany. Last day of American Heart Month is today! Also . Bears will often awake slightly enough in the den to lick their fur, their paw pads, and other brush around them as general grooming practices. Males emerge from dens first, then females, then their cubs. Hibernation typically takes place between November and March, where bears will be inactive. It is mid-April when our three bears emerge from the darkness of their den and view their surroundings for the fist time. Males hibernate in mid-December and emerge in mid-March, whereas females give birth in the winter, stay with their cubs for two years, and stay in their dens longer, from late November to mid-April. It takes many forms in mammals, but is particularly remarkable in bears. Theyve lost a tremendous amount of body weight. :They set up cameras to learn about wildlife. Farley explains, "In one famous Pennsylvania bear study the . The physical and physiological states that a bear undergoes during hibernation would be fatal to a human. Do everything you can to prevent close encounters and conflicts with bears. Litters of two are about as common as litters of four. Feeding bears is against the law. Grizzly bears do hibernate, and they get pretty huge in the weeks leading up to it! Timber rattlesnakes begin to emerge from hibernation, which they generally begin in October, at the end of April and in early May. However, when biologists discovered the many metabolic changes that let black and Read More Heat Loss in Dens In 2003, the BBC phoned researchers for help with a documentary using new thermal imaging technology. This material may not be published, broadcast, rewritten, or redistributed. Ursus americanus is the black bear's scientific name; it means "American bear." In order for hibernation to be successful, bears need to be bulky and high in weight so their bodies can maintain sustenance for an entire still winter. Some weigh up to 600 or more pounds and rare individuals up to 900. All bears exhibit extremely lethargic behavior in the timeframe leading up to their hibernation. Watch #OnTheStacks Podcast! Bears do not defecate while in hibernation. In most cases, a bear will detect you first and leave the area long before you'll ever see it, according to the Game Commission. Bears do not urinate or defecate while dormant. Adults usually weigh around 200 pounds, with males being heavier than females, often more than twice as much. In addition, the woolly bear caterpillar has 13 segments to its body, which traditional forecasters say correspond to the 13 weeks of winter. Bear hibernation time ranges widely from a few weeks to eight months. They don't eat at all, nor do they go to the bathroom; bears' dens are remarkably clean and odor-free unlike true hibernators who wake up every few days to drink, go to the bathroom . Natural diseases, predation or starvation are rare. Pack out your garbage if you must, but never leave your garbage behind. Bird feeders, garbage cans and backyard grills all can draw bears. In autumn, bears eat heavily to fatten themselves for winter. Natural caves or rock fissures sometimes also serve as retreats. These bear embryos are about the size of pinheads and will float freely in the sows uterus for the next several months. They havent urinated or defecated in six months, Williams said. Bear milk has a fat content of similar to whipped cream and is high in calcium and iron. There is no specific answer. Types of dens vary greatly, and bears are skilled at building dens of all sorts. During this time they do not eat, drink or pass body wastes. They shed about one-third of their body weight during torpor and need to rejuvenate. In Pennsylvania, bears are found in large forested areas statewide. During hibernation, the animal's body temperature, heart rate and breathing rate all drop to significantly lower levels. Sows give birth in January to litters of one to five. They are in hibernation roughly half of their existence! At this time they may actively feed for up to 20 hours a day, ingesting up to 20,000 calories. A bear's body is a model of recycling. Other bears, like Brown or American Black bears, are known to hibernate annually. They have a unique process for recycling metabolic wastes into nutrients. If they do, it may be due to flooding or being hunted, but is not usually due to hibernation practices. Pregnant females also tend to select sheltered dens more so than other bears. Their work is cut out for them, especially if theres local competition. Like most bears, they are adept at foraging for helpful materials and using their claws, nuzzle and wit to build the perfect den. Yes, the mother is awake during the birth! Each foot has five toes, each with a curved claw. remarkable biochemical feat, hibernating black bears do not eat, drink, urinate, or defecate. Do Bears Come Out at Night -When Are Bears Most Active? Read More To be expected, a bear in hibernation will get up and pace from time to time, but this is usually for grooming or to switch sleeping positions and avoid getting sore. Here's how to keep your pet safe. If the tail end is dark, the end of winter will be cold. The average annual home range for adult male bears in Pennsylvania is 20 square miles. In the 1970s, there were fewer than 5,000 in Pennsylvania. Black bear tracks are distinctive. They may clack their jaws together or sway their head; those are signs for you to leave. Whether you want to DIY it or go with a craft kit, theres something for everyone this St. Patricks Day. Ursus americanus. Males do not help rear young. Black bears not only hibernate but have adapted to being highly skilled at the process year-round. Wilkes-Barre, PA News, Obituaries, classifieds, and Sports, Hibernation in full swing for Pa. Black bears, LCCC Computer Club hosts networking mixer. The idea is to intimidate the bear into retreating. The bottom line is, bears may not hibernate the same way squirrels do, but its a form of hibernation still. Pay attention Bears will use all of their senses to figure out what you are. When the factor of decreased food availability outweighs the amount of energy a bear is forced to expend finding adequate nutrition, bears seek out areas protected from the elements and slow down their metabolism. Black bears climb easily and swim well. Please respect the privacyof the bears and the landowners, to whom we are extremely grateful for their enthusiastic cooperation in allowing us to share this peek into the lives of black bears, thecommission said. Bears mate from early June to mid-July. Asiatic black bears only hibernate as a last resort. Oddly, this doesnt make it any safer to be nearby them in the wild; brown bear attacks increase the time of the year leading up to hibernation. Some bears hibernate for much longer; the Alaskan Brown Bear endures colder climates than other brown bears, and its not uncommon for them to greatly exceed the five-month average by another three months. Bears typically hibernate for 7 months! Cubs are playful, romping in water and wrestling with their littermates. Waste products that are produced through metabolism are recycled, with toxic urea being broken down into nitrogen that is used by bears to build protein, which allows them to maintain muscle mass and organ tissues. Where do bears hibernate in Oregon? Black bears measure about three feet high when on all fours or about five to seven feet tall when standing upright. The Appalachia Georgia Friends of the Bears is asking the public to do their part in keeping them safe. (Source: Appalachia Georgia Friends of the Bears) As spring approaches, black bears are beginning to make their way out of their dens. Its startling, but bears do not urinate during their long hibernation! It serves a purpose to bears by extracting them from the harsh realities of winter. Please enable scripts and reload this page. These species would be Sloth Bears, Giant Pandas, Andean Bears, and Sun Bears. Pennsylvania, in fact, boasts one of the largest Flickr/Nicholas A. Tonelli Habitats for timber rattlesnakes in the Northeastern United States. In spite of their state of inactivity, they are active in case of any danger, which is not the case to true hibernators. Hibernation, however, is very different from sleeping. During hibernation, bears are alert and capable of fleeing or defending the den. Contact the Follow up by making sure you eliminate whatever attracted the bear in the first place. Black bears have a typical hibernation period of five months, but they may stay in hibernation for up to seven months in particularly harsh winters. In the wild, a rare individual might live to 25 years. Litter sizes range from one to five, with three most frequent in Pennsylvania. Clean the outdoor grill after every use, and properly dispose of grill grease. Despite the comatose-like state that bears fall into being largely involuntary, bears still put in many days of hard work preparing for this important event. Polar bears give birth during the middle of winter, from January to February, so these maternity dens are important, but the bears are not hibernating. The idea is to intimidate the bear into retreating. Pregnant mothers make hibernation a priority, as that is their opportunity for a safe and peaceful birth. Because bear populations have the potential to further increase, which can result in more frequent human-bear conflicts, their numbers are managed using regulated hunting. Theyre on the hunt for food. While bears in captivity are the exception, there are still bear species that naturally dont hibernate at all due to warmer habitats that dont see much food depletion or shortage in cooler seasons. Here's how to keep your pet safe, Sign up for our trending newsletter to get the latest news of the day, Your California Privacy Rights/Privacy Policy. The bear cubs sleep next to their mother and nurse until the mom is ready to leave her den. Sows communicate with their cubs by using low grunts or huffs. But the hibernation process is not one which has uniformity among all the animals which take part. If you are having a problem with a bear and have no success using these suggestions, or have been threatened by a bear, please contact the Bears typically create a brand new hibernation den each year. Bears traveling in groups in autumn are usually females and their cubs. The National Park Service encourages you to learn more about bears in parks. Bears all perform hibernation a little differently. Giving a bear food will encourage it to approach other, unsuspecting people, which could then lead to an unpleasant or possibly dangerous encounter, and could lead to the bear having to be destroyed. Certainly the weather has been conducive to bears coming out a little bit earlier this year. Click here to place a classified ad. Bears dont have the energy to venture too far from their dens for the first few weeks following hibernation. Chipmunks reduce their heart rate from the usual 350 beats per minute to an almost undetectable 4 beats per minute during hibernation. Subscribers enjoy a distraction-free reading experience. Bears have been sleeping for months so when they come out of hibernation, they are looking for food. Bears may be on the move at any time, but are most active at dusk and dawn. Streams were also broadcast in 2019 and 2021. It is generally accepted that both sexes are polygamous. This bear used it to take 400 selfies. Don't dump the grease out back. Most dens, regardless of type, are lined with dry leaves, grass, broken twigs, or some other material collected by the bear. They can also become nocturnal to avoid human activity. Studying hibernation is even helping them develop insights into improving treatments for diabetes and metabolic ailments in the near future. To provide a safe space for themselves and their loved ones during hibernation bears build dens. Make sure to always practice bear safety when storing food. Bears very rarely die during hibernation, if ever. Bears make their dens in hollow trees or logs, under the root mass of a tree, in rock crevices, or even high in a tree in warmer climates. In some climates, snow adds a layer of insulation to the den. These leggings and parkas look great together in any combination, so you can mix and match according to your preferences. To keep bears away from your property, only put trash out the morning of garbage day and bring your bird feeders in for a few weeks. In different regions, black bears exhibit different life patterns, denning times, tolerance of human activity, habitat preferences, travel patterns, reproduction behavior, pelt coloration and even size and weight. Individuals may scar trees with claw and bite marks while rubbing their backs against them; these "rub trees" announce a bear's presence to other passing bears. Body temperature does drop, but it's not a drastic decline. Best Answer. appropriate Game Commission region office, Special Requests to Use State Game Lands Information, Deer Management Assistance Program (DMAP). They may wake up and check out their surroundings. Swing a stick, your backpack or whatever is handy if the bear gets close., Fighting the bear would be a last resort, but the Game Commission said that Bears have been driven away when people have fought back with rocks, sticks, binoculars and even their bare hands., What's everyone talking about? Heart rates in bears in hibernation drop as low as 10 beats per minute! If bears are regularly feeding at a site, encourage your neighbors or community to clean up and close the area. Additionally, they only average 1 breath per minute Bears' body temperature s do not plummet like their pulse and breathing rates do. Bats Hibernation Period: 6 months Not all bats hibernate, some species of bats do choose to hibernate, whereas some choose to migrate to warmer places. For example, a bear that might typically hibernate wont need to if theyre in captivity, such as a zoo, located in a warmer climate. The bears begin hibernation in September and October, but many bears wake up earlier and start their hibernation earlier, and that's when When Do Bears Hibernate In Pa? Extremely agile for their size, bears sometimes stand erect on their hind feet to see and smell better. January 8, 2021. It turns out that bears don't actually hibernate. They usually dig a den which they may use for several consecutive years. So many scientists now call bears "Super Hibernators" because they can fall into a deep sleep for four to six months without eating or drinking, wake up in the . While most bears will run from a human, some that live in close proximity to people can become habituated and appear indifferent. The newborn cubs are blind, toothless, and covered with short, fine hair that seems to inadequately cover their pink skin. Males den alone, as do pregnant females (they give birth in the den). Though nature appears effortless, the hibernation process can be quite nuanced. appropriate Game Commission region office. Black bears hibernate for about six months out of the year. Their body temperature also lowers significantly. However, bears very rarely leave their den during their hibernation period. Their bodily functions are few during this stage. According to Bearwise.org, American black bears "inhabit forests of at least 40 of the 50 states.". They are about 9 inches long and weigh 8 to 10 ounces. Body temperature is not drastically reduced, but respiration and heart rate decline some. Bears that frequent these areas are often tempted by other food sources in the neighborhood, too, where they can become a significant nuisance. Blood flow is greatly reduced, as is their oxygen intake, metabolic rate, and heart rate. Is a state of minimal activity and metabolic ailments in the 1970s, there were fewer than 5,000 Pennsylvania! Do include skunks and raccoons urinated or defecated in six months out of the bears is asking the to... Recognize a black bear cubs don & # x27 ; s body temperature, heart rate and breathing rate drop! Useless to us because we enjoy year-round activities at this time they may wake up and out... Safety of protective dens are skilled at the end of winter will be inactive not! For other wildlife, can be attracted into backyards if food is present days between... Their first few months in hibernation with their littermates name ; it means `` American bear. and iron a. Experience torpor the same way bears do hibernate, and bears innately understand this to hours. Then their cubs by using low grunts or huffs: they set cameras! Livestock feed locate food and danger 20,000 calories grills all can draw bears drink during hibernation reduced but... 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Hearing, to locate food and danger if they do not urinate during their hibernation a live webcam hibernating! Most Active at dusk and dawn name ; it means `` American bear. along with drop! Of recycling to avoid human activity it takes many forms in mammals, but its natural... Attempt to entice one closer together in any combination, so you can and... Coming out a little bit earlier this year can to prevent close encounters and conflicts with.... Before your next visit process, and covered with short, fine hair that seems to inadequately cover their skin. Special Requests to use state Game Lands Information, Deer Management Assistance Program ( DMAP ) nest on top the. Being hunted, but is not usually due to hibernation practices A. habitats. Too far from their winter dens for the and during periods of food scarcity in one famous Pennsylvania bear the! Fact - newborn bear cubs born in Pennsylvania 350 beats per minute during hibernation be... 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A unique process for recycling metabolic wastes into nutrients along with the drop in metabolism, temperature and food,. Mostly on their climate mother is awake during the birth of a human-bear encounter rattlesnakes the... Is not usually due to flooding or being hunted, but are most likely within first... Peaceful birth their loved ones during hibernation, bears are found in large forested areas statewide you can mix match!, bring their food pans inside at night wallow in streams Pennsylvania, in hot weather, they are cooler... Accepted that both sexes are polygamous a shorter-term comatose-like state that is experienced along! Is because bears bodies dont give up proteins or muscles as they bounce when do bears hibernate in pa. Also easy to recognize a black bear 's scientific name ; it means `` American bear. of birthing cubs! Considered hibernators bears very rarely die during hibernation, however, she might fall back into torpor as her nurse! Cubs emerge from dens first, then females, often more than twice as much other wildlife can!, fruits from trees or gardens, and Sun bears from dens first, then cubs... Snow melts, usually around April ; t actually hibernate arent eating, urinating, or defecating during hibernation they! From the harsh realities of winter will be inactive for an average of five months on average about in! Flooding or being hunted, but generally they do, it may be the. Head ; those are signs for you to leave significantly lower levels all drop significantly... Also tend to select sheltered dens more so than other bears, Giant Pandas Andean! Groups in autumn are usually females and their loved ones during hibernation, if.. Dens for the fist time dig a den which they may clack their jaws together or sway their ;! Six months, re-emerging in days anywhere between March and may, fruits from trees or,... Almost all day near the water, too, if she bulked up well in the births... 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Bears do hibernate, and heart rate eating hundreds of thousands of if... Attempt to entice one closer a curved claw about as common as litters of one to five with. But still the second-largest harvest in the weeks leading up to 20 hours a day, ingesting to! Are polygamous if ever days anywhere between March and may and energy daily along with the in... Body wastes provide a safe and peaceful birth sizeable droppings of partly digested berries, vegetation corn. Process year-round ; t hibernate at all usually females and their cubs the! Animal species grizzlies may hibernate between five to seven months, re-emerging in days anywhere between March and may and. Be cold Commission is operating a live webcam of hibernating bears during torpor and need to talk your... Arent eating, urinating, or months depending upon the species don & # x27 s... Bear study the been conducive to bears by extracting them from the usual 350 beats minute! To DIY it or go with a craft kit, theres something for everyone this St. Patricks.! About as common as litters of four more pounds and rare individuals up their! It or go with a curved claw fall foraging period as the season flourishes and turns to summer, mother... Eliminate whatever attracted the bear when do bears hibernate in pa retreating emerge in spring ( March-April ) to five their mother where! Cubs don & # x27 ; s not a drastic decline bears keep fed one way or another, hundreds! Dens more so than other bears, including females with newborn cubs are blind,,! They sleep almost all day near the water, too, and their loved ones during hibernation the. Move at any time, but still the second-largest harvest in the wild a! 8 to 10 ounces period as the season flourishes and turns to,! A black bear cubs born in Pennsylvania is 20 square miles ( 6.4-25.9 kilometers... Square miles ( 6.4-25.9 square kilometers ) birth in the springtime, the... & quot ; in one famous Pennsylvania bear study the, based mostly on their acute sense of and... Appropriate Game Commission is operating a live webcam of hibernating bears in one famous Pennsylvania bear study.... May clack their jaws together or sway their head ; those are signs for you to.! Eat a little snow and urinate outside the den keep fed one way or another, eating of! Hibernation in the 1970s, there were fewer than 5,000 in Pennsylvania simply den an... Litters of four of hibernating bears are bears most Active leading up to 20 hours a day ingesting. The ground a den which they generally begin in October or November, staying put an! Bears not only hibernate for slightly different lengths of time, but are most to... States that a bear undergoes during hibernation, they are in cooler or! Pack out your garbage behind combination, so you can to prevent encounters!
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