Pandas and Koalas
Transcription
Pandas and Koalas
Pandas and Koalas Magnificent Species at Risk Alison Long 3/23/12 Mr. Goldfarb Introduction You have just boarded a train for an eco-tour. Your first stop is China, where you hope to see lots of the rare, beautiful plants and animals native to that country. As your tour group treks through a breath-taking forest you see some scratch marks on the ground, and on a surrounding tree. “Crunch,” you hear a twig break, and turn just in time to see a majestic black and white creature crawl into the forest. You recognize it immediately as the extremely rare giant panda. Despair sweeps over you as you realize how close this species is to extinction. How has mankind let this fascinating species nearly slip away? Appearance and Body Pandas have a very unique shape and markings. Their markings are one of the things that people find cute about giant pandas. They have very well-adapted bodies for the rocky terrain they live in, from their big ears to their sharp claws, and amazing hands. A panda’s large ears help it to locate and avoid other pandas and predators. A panda’s slit-shaped eyes help it see whether it’s day or night. Their pupils can shrink to keep light out, or expand to let light in. This also helps them look for predators and other pandas. A panda also use its nose to smell for predators or other pandas. Pandas have a very select diet of only bamboo. Since bamboo is so tough pandas need strong, sharp molars to grind up the tough plant. A panda, although rarely attacked can use its sharp teeth to defend themselves. Pandas also have a tough leathery lining on their esophagus to protect from splinters piercing their body. A panda must also have strong stomach muscles, or digesting bamboo would be almost impossible. A pandas hand also helps them eat bamboo. A panda’s hand actually has 6 fingers. They have 5 fingers that go straight up and down and then I thumb. They use their thumb to help them grasp bamboo, their favorite food. On their This panda is showing off its thumb as it eats some bamboo. hand they also have rough thick pads. Since pandas spend the majority of their time crawling around on their paws, the tough, leathery pads help them to not get hurt when they walk on things like rocks, or wood splinters. Grown pandas have very few natural enemies, but a panda cub makes a tasty snack for a hungry snow leopard. Pandas have long, sharp claws to help defend themselves, and their cubs. All over a panda’s 200 pound body is their beautiful fur. A panda’s unique markings help them camouflage into the mountainous terrain they live in. Although a panda looks soft and plush-like, their fur is not very soft. They have an oily substance on their fur to keep them from getting wet. This is a huge help, since pandas live in damp conditions, where snow is frequent. Underneath their course, waterproof top-coat, a panda has shorter, fluffier fur to keep them warm in the cold, frigid winters of China. Diet The giant panda has a very select diet, they only eat bamboo. More specifically, they eat the stalks, leaves and shoots, of only 2 bamboo species, arrow bamboo, and umbrella bamboo. Bamboo is very low in nutritional value; it is made up mostly of water and fiber. They get little or no iron, protein and vitamins. And to satisfy the 200 pound panda’s diet, they must eat massive amounts, between 23 to 40 pounds a day! If pandas are very hungry, or there is little bamboo, pandas might eat flowers, berries, rodents, or fish. But that is not enough to satisfy a panda, without bamboo pandas starve. A panda's diet is made up of umbrella bamboo, and arrow bamboo. (Pictured above) In captivity, it would be extremely difficult to provide 40 pounds of bamboo, and that’s only for one panda. Pandas in zoos are fed a mixture of rice, carrots, honey, bread, and bamboo. It is much easier to provide and helps the pandas. The pandas get more vitamins that they need to survive, vitamins that bamboo does not supply. Habitat Giant pandas are native only to China, and live only in Chinese mountain ranges. They do not build permanent nests, dens, or burrows. They use the same den for a maximum of 2 nights. They live in cold damp places, near lakes, and streams, and around snow. They must live in ecosystems with lots of bamboo to support their massive appetites. They must live in rocky terrain to help them camouflage. Pandas are very territorial animals. One panda could occupy up to 25 square miles of land. They mark their territory with scratched or chewed trees, scratched ground and droppings. This map shows where giant pandas used to live, and where they live now. As more people moved to China more houses needed to be built, which meant more bamboo was cut down. As more bamboo was cut down, giant pandas had to move away from the valleys they lived in, and go up to the mountains, where there was still bamboo. Now their habitat is sandwiched between farmlands and rhododendron forests. Now you will find giant pandas in the Sichuan Province. But a long time ago, they roamed Burma, Laos, Vietnam, and much of China. Daily Life As interesting as pandas are, their daily life is a little boring. Pandas are nocturnal, which means they are active at night. Pandas are not very social; they try to make as little contact with other pandas as possible. They are very territorial they don’t like other pandas coming into their marked territory. Unlike many other animals, pandas don’t build permanent nests, dens, or burrows. They will use the same den for a maximum of 2 nights. They must be moving all the time to find bamboo to satisfy their big appetite. In one day a panda can eat between 23 to 40 pounds of bamboo. In one day the typical panda spends 14 hours eating. For the remaining 10 hours in a panda’s day, they are most likely sleeping. A panda sleeps in 2 to 4 hour sessions. When a panda is awake, they are not very active; they stroll slowly, and eat, not exactly a thrilling life. But, unlike many other bears, A panda spends 10 hours a day sleeping. the giant panda doesn’t hibernate. Bamboo doesn’t allow them enough fat, they would starve. Anyone who has seen a panda in the wild is very luck y. Pandas are very shy, and for the most part, and avoid people. Mating and Young As you know, pandas are very territorial. That is, except for mating season. The giant panda mating season only lasts a few weeks a year. When the female is ready to mate, she will call, and bellow to let males in the area know she is ready to mate. Giant pandas can begin mating when they are between 4 and 6 years of age. Many times, there’s fighting between males. It is very important to find a mate with different genetics. Otherwise, the cub will be weak. As forests are cut down it is getting harder and harder for pandas to find suitable mates. After mating the male leaves, the mother will raise the cub alone. After mating, the soon to be mother panda is pregnant for 3 to 5 months. Many times, she will give birth to twins. She will only care for one; the other is abandoned, left to die. You might find this cruel, but if there is a shortage of food, it is impractical to try to raise both cubs. This way, at least one of the cubs will live. Giant pandas stop mating at about 12 to 16 years old. A mother panda cares for her cub for up to 2 years. So, the average number of cubs she can have in a lifetime is about 5. When the cub is born it is very small, only one thousandth of their mother’s weight. (0.001) They weigh about 4 ounces, and are about 6 inches long, the size of a stick of butter. It is born with its eyes closed and a thin, white layer of fur. It drinks milk from its mother to help build up its When a panda cub is born, it is blind and the size of strength. At around 1 week, the a stick of butter. cub will begin to grow dark patches around its eyes. These unmistakable markings will make it look more like a panda. 2 weeks after the black patches start to grow; the markings will be fully developed. When the panda cub is 4 weeks old, its mother will take it outside for the first time. Since the cub is too young to maneuver on its own, its mother will carry it in her hand and walk on her knuckles. This prevents the cub from being pounded in to the ground with every step its mother takes. Then at around 6 weeks, the cub will begin to eat bamboo, the food it will live on for the rest of its life. Also at around 6 weeks the panda cub’s eyes will open. After that, the cub will learn to crawl. 6 weeks is a very important milestone for a panda cub growing up. At 12 weeks, just 6 weeks after the cub has begun to crawl, the panda cub is walking with ease. The next big milestone in a panda’s life is 2 years. That is when the panda will move out on its own, away from mom. The cub will have to use all the survival skills it has learned as a cub to go out and live on its own. Endangerment There are 2 primary reasons behind why pandas are endangered. The first reason is things humans do to cause endangerment. Pandas have very beautiful habitats, and of course, humans want to see these places, and all the beauty of China. So lots of tourists come, and create jobs. One of these jobs is tour guides. If the tour guide is not certified, the tour guide could harm wildlife, including, or impacting pandas. Another job tourists create is builders. The tourists need more roads, smoother roads, hotels, and restaurants built. This creates pollution in streams, lakes, ponds, and air; pollution also destroys wildlife. I find it ironic that tourists come to see the wildlife, but end up hurting it instead. Another reason pandas are endangered is poaching. Before pandas were so rare they were poached freely. Their skins would be given to rulers, and other powerful people as gifts. Their hides are very warm, beautiful, and waterproof. This makes it perfect for bedding, and coats At one time pandas were even poached for museums and research. Nowadays, pandas are still poached, but at much lower numbers. 1 reason people still poach pandas is for sport. Some people think it’s cool to own a stuffed panda. But there’s nothing cool about killing an endangered species, it’s against the law! Another reason is panda skins are very valuable. A poor farmer can sell a panda skin for several thousand dollars, that can be very tempting. The primary reason pandas are endangered is habitat loss, and habitat fragmentation. If people cut down lots of bamboo, the giant panda can starve. As more people cut down trees, they create different mini forests that are isolated from other forests. This is called habitat fragmentation. A long time ago pandas could migrate to different forests, while staying hidden, they don’t like wide open places. Now, roads, farms, and train tracks stand in pandas’ way. One major problem caused by habitat fragmentation is starvation, but it proposes another serious. A panda cub needs a mix of genes. If its mom and dad are related, the cub becomes more susceptible to diseases. If a female panda mates with a male in the same area, they have a better chance of having a cub without a variety of genes. Pandas need to be able to move around to find suitable mates. Humans need to remember, with less than 1,600 giant pandas left in the world, each one counts. Even though humans are mostly responsible for the giant panda’s endangerment, nature is also helping. Every few years, bamboo, the only food pandas eat flowers. That means the bamboo plant grows flowers, then drops seeds, and dies. Then the seeds the bamboo dropped will grow back. But that can take a while, and pandas can’t just stop eating. So if an isolated area of bamboo all flower at the same time, the pandas in that area could starve. Also, predators threaten the panda species. A fullgrown panda isn’t easy prey, but a panda cub is. Snow leopards and wolves are a panda cub’s fiercest predators (next to humans). Also, primary food sources that a panda’s predator usually relies on are becoming scarce. So, the predators are hungrier than ever. Severe weather can harm pandas as well. Floods can damage bamboo. Since pandas live in such cold places, climate changes are hard for pandas; they are not adapted to the rising temperatures. Global warming hurts pandas. A snow leopard is a major threat to young pandas. When bamboo is cut down, pandas' habitat and source of food shrink. Another reason pandas are endangered is they breed slowly. Unlike animals like fish, and frogs, which lay thousands of eggs at once, a panda only has 1 cub at a time. Panda cubs don’t begin to breed until they are 4 years old. And a mother panda raises her cub for about 2 years. Even though a panda can have up to 5 cubs in a lifetime, they can also have as few as 2 or 3. Zoos and Helping Many people are trying to help pandas. They are starting reserves, conducting studies, making laws, getting publicity, and breeding pandas in captivity. One of the most famous reserves for pandas is the Wolong Reserve. The Wolong Reserve is a safe place where pandas can live, reproduce, and learn. Some of the scientists that work at the reserve live there, also. They give the pandas love, care, and safety. Many times at a reserve studies will be At the Wolong Reserve panda cubs learn survival skills while playing. done. Usually, if a mother panda gives birth to twins, she only cares for one, the other dies. At the Wolong Reserve, the scientists care for the one that would be abandoned. But, they do switch the cubs out so they each get time with their mother and the scientists. Then, the scientists, with the help of mom, train the cubs. At the reserve they have a contraption that looks like a playground. On the playground, the cubs will learn survival skill, like climbing, hanging, dangling, and so much more. The pandas are very playful, to them, everything is a toy. This can be very entertaining so, visitors are allowed to watch. There are restricted areas where visitors can watch the cubs being nursed, and the cubs playing. Some of the cubs will stay at the reserve for studies, and to reproduce. After about 1 or 2 years, some of the cubs will be released into the wild, to reproduce, and to use all of the valuable survival skills they have learned at the reserve. Many studies are done to help pandas; mostly they are conducted in reserves. To help scientists understand pandas better, they need to know all about pandas’ habitat, diet, movements, and behavior. For example, to help deal with bamboo flowerings, scientists are developing a special fertilizer to help the bamboo grow back quicker. And more people are working to plant bamboo, so it won’t all flower at the same time. Then the pandas will have something to survive on while the other bamboo grows back. Scientists also track pandas. They use footprints, chewed bamboo, scratches on trees and on the ground, and dropping to help them find pandas. After the scientists do find a panda, they put it to sleep shortly. Then, they can put a tracking device on them, it works like a GPS. These studies will help to make the giant panda’s habitat better, and more customized to their needs, in the wild, and in captivity. To even further discourage people to hurt giant pandas, several laws have been made, or revised to protect them. There is a rule that summarizes all the things you shouldn’t do, because they hurt pandas. They are called the 5 nos. They are no forest fires, no cutting trees, no hunting, no plowing, and no damaging forest regrowth. One cause of panda’s endangerment is poaching. Poaching pandas is now illegal. In 1987, the punishment in China, if you poached a panda, or was caught with a panda skin, was 20 years in jail. Now, as pandas’ numbers are dwindling more and more the law has become more serious. You can go to jail for life, or even get a death sentence. Many people argue that a death sentence is too harsh. They think people will hesitate more if they know turning someone in could get them killed. Another reason pandas are endangered is tourism and habitat loss. Now, there is a thing called ecotourism, where people can go on tours without hurting wildlife, or the environment. They are led by a certified ranger. But, ecotourism doesn’t do anything about the restaurants, hotels, or roads that are being built. Logging in protected areas is also banned. New ways to log without hurting wildlife, or the environment are being developed. Two other ways to help pandas are zoos and publicity. Publicity means to get the word out, and make people notice something. Today there are about 140 pandas in captivity. But, pandas don’t breed as well in captivity as they do in the wild. One reason for that is pandas need a choice of mates. If the cub doesn’t get a mix of genes it is much weaker than it would be with a variety of genes. Another reason is scientists think male pandas suffer from stress in captivity. That could contribute to the problem of slow breeding in captivity. A solution to slow breeding is artificial insemination. That is when cells from a male giant panda are injected into the female giant panda. That way, cells can be shipped from zoo to zoo, or even country to country! Then there is a mix of genes, and a healthy cub. Publicity also helps pandas. The more people know how desperately the giant panda needs help, the more of a priority it will become. In China, the only country with giant pandas, the government will often times educate people about pandas. They believe if people are more aware of the consequences they will be less likely to harm giant pandas. Also, in schools, teachers teach school children about giant pandas. Then, hopefully the next generation will be less likely to hurt giant pandas. Farmers are encouraged to feed pandas that wander on to their farms, instead of shooing them away, or shooting them. You can even get a cash reward for helping pandas. And the government is trying to set up power lines in places that usually use firewood. They hope this will cut down on illegal logging and habitat loss. Another organization that is a tremendous help is the World Wildlife Fund. (WWF) Their logo is a panda, now pandas are one This picture shows how the WWF's logo has changed over the years. of the most recognizable animals. It has helped to get people educated and concerned. They have panda counts, to track the species progress. You can even “adopt” a panda. You don’t get to keep it in your house, or backyard, you sponsor it. When you adopt a panda you send money into the WWF and get a small plush panda, some pictures, and information. Closest Relation Many people argue about what the giant panda’s closest relation. Is it a raccoon? Many people believe that the giant panda’s closest relation is the raccoon. The red panda (or the lesser panda) used to be thought of as the giant panda’s closest living ancestor. Then scientists found that the red panda was actually a raccoon, many people argued that the giant panda must also be a raccoon. Also, a raccoon’s teeth, skull, and forepaw’s are similar to a giant panda’s. Is it a cat? Pandas have slit-shaped eyes, and pads on their paws, just like cats do. Also, their Chinese name is daxiongmao, which means large bear cat. And, the giant panda’s scientific name, ailuropoda melanoleuca means black and white cat foot. No, it’s a bear! Recent studies prove that giant pandas belong to the bear family. Giant pandas have the same size and shape as bears do. Also, a newborn panda cub looks similar to other bear newborns. A giant panda’s closest bear relation is the spectacled bear. This is a spectacled bear, the giant panda's closest relation. Introduction You have just finished your ecotour in China. Next you are going to Australia, the continent with the most marsupials. You hope to find kangaroos, wallabies, and of course, koalas. As you are hiking through a serene forest in Australia, a familiar smell surrounds you. You recognize the smell as cough drops, and you look around to see where it is coming from. “Waa,” you hear a baby cry, and look up into the trees. “Aww,” you sigh, it’s a baby koala on its mother’s back. It seems to be crying for food. Later when you are researching these adorable marsupials, you find they are on the brink of endangerment. And, worst of all, it’s mostly the human race’s fault. Who could possibly harm this lovable species? Pandas and koalas are both in need of help. We could help them in many of the same ways, or we could lose these magnificent creatures forever. Appearance and Body Koalas have very odd and recognizable bodies. They might look strange, but their bodies are one of their best survival tools. There are 3 species of koalas; they all live in Australia. They are the Victorian, the New South Wales, and the Queensland. The largest is the Victorian. The females weigh in at 19 pounds, and the males weigh about 27 pounds. Their thick brown or gray fur helps them stay warm in southern Australia. The most recognizable is the Queensland. They have short gray or brown fur to help them stay cool in warm northern Australia weather. They are also the smallest, only up to 14 pounds. The New South Wales koala is smaller than the Victorian, with shaggier ears the Queensland. They live southern Australia, with thick fur to keep them warm. All koalas’ brown or gray fur helps them to camouflage. Koalas are truly fascinating animals, from their giant ears, to their weird back paws. Their large shaggy ears have tufts of fur in front of them From left to right, this is the Victorian koala, the Queensland that are lighter than the fur on the rest koala, and the New South Wales koala. of its body. Their ears help them to hear predators, or other koalas that are nearby. Their eyes are small, compared to the size of their head. Koalas are nocturnal, and don’t move around very frequently or quickly, so good eye sight is not a necessity. Right in the middle of a koala’s face is a large hairless nose. Their nose helps them in many important ways. Koalas don’t like sharing their tree with other koalas, so koalas use their noses to sniff out other koalas. They also use their nose to smell predators. A koala’s body also helps them while eating. For example, their nose also comes in handy at mealtime. Younger eucalyptus leaves (a koala’s diet) contain poison. A koala can smell out the poison. Eucalyptus leaves are hard to chew, they are very tough. Because of this, koalas need strong jaw muscles to grind up the leaves. As you can see, koalas are interesting animals, including their stomachs. On a matured female koala’s stomach you will find a pouch. They use their pouch to hold their young after birth, while the joey is still developing. Their pouch faces down towards their legs, contrary to a kangaroo’s pouch. On a male koala’s stomach, there is a scent gland. They use this to mark territory; it tells other koala’s to keep out. During mating season, he will use his scent gland to attract females. Koalas spend most of their lives climbing in trees. To help them climb all day, they have very strong muscular arms, and very sharp claws. They are also tailless. When they sit in trees, it would be uncomfortable to be sitting on a big lump. A koala also has very peculiar hands. On a koala’s front paw, they have 3 fingers, and 2 “thumbs.” They use their front paws to grasp leaves and to climb. On their back paws, they have 2 fingers, then 2 fingers fused together, and a “thumb.” They use their 2 fused fingers to comb their fur. On a koala’s hands and feet, they have thick rough pads. They help to cushion any falls, and to grip tree bark. If a koala is provoked, it will use its strong sharp claws to attack. Its sharp claws also help it to climb. Diet Koalas are one of the fussiest eaters. The koala only eats the leaves, flowers, young shoots, and bark of the eucalyptus tree. There are between 600 to 800 specimens of eucalyptus, the koala only eats about 50. And koalas only love bout 5 specimens. Eucalyptus is not very nutritious. It is made mostly of water. It doesn’t give koalas much energy, so they must eat a lot. A koala can spend up to 4 hours eating a day, and can eat up to 3 pounds of eucalyptus! Since eucalyptus is mostly water koalas rarely or never have to drink water. Some eucalyptus trees can be poisonous, in other trees; the younger leaves might contain high levels of poison. They will lose most of the poison as they mature. Non-poison trees can even change to poisonous trees, or vice versa. How in the world A koala eats eucalyptus for about 4 do koalas keep straight which trees are poisonous, and which are safe to eat? They don’t have to. Their amazing sense of smell can hours a day, and will eat about 3 pounds of smell the poison in the leaves. it. Koalas are the one of the very few animals that eats this poisonous tree. A koala’s body is also adapted to help them digest the eucalyptus. They have strong jaws and teeth to help them grind up the tough plant. Then, they have special bacteria in their stomach to help them break down the poison in the eucalyptus. They also have lots of storage in their body, like their fat cheeks. Habitat Koalas are only native to Australia, more specifically mostly the eastern coast. They live in a variety of terrains, from mountains, to flatlands, and north, to south. They just need eucalyptus. Koalas don’t build nests, dens, or burrows; they don’t even claim a tree as their permanent home. They move from eucalyptus tree, to eucalyptus tree. They rarely spend time on the ground. The average koala needs from 15 to 20 eucalyptus leaves to survive. If a koala does need to move to another tree, they will walk out to the edge of a tree branch until it tilts enough to create a bridge to a nearby tree, then they will leap the remaining distance to continue munching. But, as more trees get cut down, koalas need to travel a farther distance to find eucalyptus trees. They must dismount, and then run for their life to another tree. Sometimes, they might even have to swim; luckily koalas are strong on land, and in water. But, the longer the distance they have to run, the better chance predators can catch them. If a koala is caught by a predator, it must fight with its claws. Koalas are very territorial animals. It is rare to see 2 koalas in a tree, unless they This shows a koala leaping from tree to tree. are a mother and her baby, or it’s mating season. Koalas used to roam over much of the island of Australia. But, as more trees are cut down, and more houses are built, their living spaces have dropped drastically. Daily Life As fascinating as koalas are, their daily life can seem far from extraordinary. A koala is nocturnal, which means they are awake at night. The majority of a koala day is spent eating and sleeping. A koala can spend 16 to 20 hours sleeping in just one day! Unlike humans, koalas sleep in a vertical position. They will nestle their neck into a fork in the tree, and rest on the tough skin under their chin. A koala can sleep in pretty much any position, even with a leaf hanging out of their mouth. When a koala isn’t sleeping, they’re probably eating a eucalyptus tree. It is rare to see koalas out of trees. The only time a koala will leave a tree is if they have eaten all the good leaves from the tree they are in and need to relocate to a new tree. Even then koalas try not to go on the ground. If the trees are close enough, a koala might leap to the nearest branch on another tree. They do this by walking out onto a branch until their weight pushes the branch into an arch. This creates a bridge for them to walk across. Koalas avoid the ground so much because on the ground they have many more predators. And a young koala is easy prey. These predators include dingoes, foxes, pythons, and birds. It is This koala is resting on easier for a bird to spot a koala the thick skin of its neck on the ground, then to spot a koala in a tree. Although koalas while it rests. avoid the ground and water they are not necessarily clumsy when they aren’t in trees. Koalas are very fast sprinters, and strong swimmers. They need to have those skills in order to escape from a dingo. If a predator does catch up to a koala, a koala will use its claws to defend itself. Koalas are very quick on the ground, as well as in trees. Mating and Young Most of the year koalas have a lazy, repetitive lifestyle. But during mating season, koalas are far more active. For koalas, mating season takes place between September and March, summertime in Australia. Mating season is also a rare time when koalas interact with each other. Before koalas mate, they must find another koala to mate with. To attract a female, the male will roar or bellow. People who have heard these noises say it sounds like a pig, a snore, a sneeze, or the tick of a clock. The female then replies with a roar, or bellow that is higher pitched, and heard less often. Many times, fights will break out between males. To mark their territory, males will rub their scent gland on trees to tell other koalas to keep out and This koala is calling out to potential mates. stay away. The average female koala will start to breed at around 3 or 4 years, the average male koala will begin to mate at about 2 years. When the baby koala, (called a joey) is born 35 days after mating, it looks like a pink, wet jellybean. The mother will raise the joey alone. It is born hairless, earless and blind, with only stumps for back legs, but fully developed front legs. It will need its front legs to pull itself out of its mother’s pouch. But, it has a strong sense of smell and touch. If the joey does not make it into its mother’s pouch immediately after birth, it will die. While the joey is in its mother’s pouch, which she washed out with an anti-bacterial substance, it will drink milk for 6 or 7 months while it grows fur and ears, its eyes open, and its back legs develop. When the joey is ready to see the world, it will start eating pap. Pap is a slimy, green substance of pre-digested eucalyptus from its mother. It is full of When a koala nutrients, and gives the joey the smell and taste of the food it will be is born it is the eating for the rest of its life. That is why having a downward facing pouch size of a is perfect for koalas. jellybean. It is hairless, At 8 months the joey is ready to leave its mother’s pouch. At first earless, and the joey is afraid to leave, but soon will climb onto its mother’s stomach. blind, with As he gets older the joey will make the transition to its mother’s back. Being on mom’s back is more comfortable, when she jumps from tree, to only stumps tree she doesn’t have to worry about poking her joey with a stump. When for back legs. the joey turns 1 year old, it is ready to begin eating solid eucalyptus leaves! Also at around the 1 year mark, the joey will move out on its own. It has been spending increasing amounts of time on its own, and is now ready to move out. Females that are healthy with a good supply of food can give birth to and care for 1 joey a year; otherwise she will give birth to 1 joey every 2 to 3 years. In the wild koalas can live up to 10 years, in captivity they can live up to 15 years. Vulnerability Koalas’ numbers do not technically make them an endangered species, but their numbers are still far lower than they should be. One reason why koala numbers are so low is because of humans. Humans play a big part in why koalas are so vulnerable. One big threat is poaching in 1880 Europeans who settled Australia used koala fur to make coats and blankets. Since koalas have such beautiful fur, they are a big target for poachers. Just between 1919 and 1924, eight million koalas were killed. In just 1 year, two million koala skins were shipped to just Alaska. Poachers are still a threat today. People have also brought danger to koalas. Dogs, and foxes were brought to Australia, they are 2 of the koalas’ main predators. Another big reason koalas are endangered is habitat loss. A koala’s home and food source is the eucalyptus tree. The eucalyptus tree isn’t a protected tree. It is destroyed to make room for farms, houses, offices, crops, and to make into lumber. When the trees are cut down, other groves of trees are isolated. If a koala has run out of non-poisonous leaves, and needs to go to another grove, it has to travel a longer distance. That gives predators a better chance of killing koalas. And if the koala has to cross a street, they could get hit by a car. In the early 20th century there were only a few thousand koalas, where there once were millions. In 1920 people began to realize this, and they wanted laws. But the laws weren’t very strict, or well-enforced. Today there are about 100,000 wild koalas. They teeter between rare and common. Maybe if people had realized earlier, koalas would be thriving. Although people play a This picture shows how outrageous eucalyptus logging is. big part in koalas’ numbers dropping, nature is also partly to blame. In nature there are diseases. There is a disease that can threaten koala population. It is called Chlamydia. Chlamydia causes females to not be able to have babies, and blindness. Natural disasters are also a problem to koalas. Drought and wildfire destroy eucalyptus trees. So the koalas living in those trees must leave quickly, and find new, safe homes. Brushfire can kill or injure koalas. Of course, koalas also have natural predators, snakes, owls, dingoes, foxes, and goannas threaten koala young. Koalas are vulnerable in half of the places they live, and rare in another. The goanna, a koala predator, is a large Australian lizard. Helping and Zoos Before people can save the koala they must know everything about them. To do this, scientists set up studies. Scientists need to know all about a koala’s movement, behavior, and the reasons behind them. Before they can fix anything, they need to know what to fix, and how to fix it. So, scientists will track koalas and put bands on them. These bands act as tracking devices to tell the scientists where the koalas are. Scientists are also trying to learn more about a koala’s diet, habitat, and population. For example, they are trying to figure out why eucalyptus trees can turn from non-poisonous to poisonous, and how to stop that from happening. To help boost koala numbers even more there are laws and reserves protecting koalas. In 1927, President Herbert Hoover made it illegal to have koala skins shipped to the USA. In the 1930s the koala became a protected species. That means it is illegal to hunt and kill koalas. In 1980 live exportation of koalas was made illegal. Sanctuaries and reserves are also a big help to recover koala numbers. Sanctuaries and reserves are safe places where a species can thrive without threats. Some well-known sanctuaries are the Sydney Sanctuary, and the Lone Pine Sanctuary. The government of Australia sometimes will set up reserves, and then the Australia Koala Foundation, (AFK) manages it. The AFK will sell toy koalas and other trinkets to raise money. Kangaroo Island is an island off the coast of Australia. It is the safest place for wild koalas. In New South Wales they have a koala hospital. They care for up to 250 sick or injured koalas a year. Zoos are great places to have endangered species. They provide a safe place for the species to live, and educate humans about that species they are seeing. In zoos koalas need very specific living conditions. They need the correct habitat, diet, and specimen of eucalyptus. In Australia there are koala crossing That can be very complicated but after many years, most zoos signs to warn drivers of koalas that have perfected the koalas’ living conditions. might be crossing the street. Zoos also provide publicity. But, zoos aren’t the only way to get an endangered species publicity. Even educating someone helps. The more people are educated, the better chances koalas have. Koalas are very popular creatures, with their adorable cuddly appearance; many people are attracted to them. Another reason why koalas are so popular is their ability to move and act like humans. They can hug like a person, and cry just like a human baby. Also, Koalas are included in many television Programs. There are many cartoons, like “The Koala Brothers” on Disney Channel. They are even in commercials. A koala is the spokesperson for an Australian travel agency called Qantas. Once, they were even printed on coins. Koalas are now one of the most recognizable symbols of Australia. Comparison The 3 main ways pandas and koalas are similar is their reasons for endangerment, their well-adapted bodies, and their lifestyles. Koalas and pandas share many of the same reasons for endangerment. Their fur has attracted many poachers. Poachers have killed over 8 million koalas, and many pandas. Habitat loss has played a huge part on getting pandas and koalas on the protected species list. Their habitat has been destroyed for buildings, offices, and lumber. Habitat loss has also hurt panda mating, and increased koalas’ chance of being caught by a predator. Even their diets put them in danger. If eucalyptus or bamboo became extinct pandas and koalas would have nothing to eat. Global warming also affects these species. Their bodies are well-adapted to the climate they’ve had for years. It is humans who are creating global warming. Pandas and koalas also share the trait of well-adapted bodies. Depending on where in Australia you are, koalas will look different. Pandas have slit-shaped eyes, to help them see in the dark, they are perfect for a nocturnal lifestyle. Pandas and koalas also have similar lifestyles. They spend the majority of their life eating and sleeping. And the mother raises the cub/joey alone in both situations. Just by looking at them, you might think that pandas and koalas are on different ends of the spectrum, but they share more similarities then you would think. Conclusion After you realize these animals are endangered you think, “What can I do?” Then you think, “Someone else will save the pandas and koalas. Anyway, I’m not a scientist. I couldn’t do anything important anyway.” That isn’t true. You can’t always count on someone else to save the day. If everyone thought someone else would solve all the problems, nothing would get done. Sure, one person can’t do it all, and some things have to be left for the scientists, but every little thing counts. Even by educating others, you are making a difference. You can’t force people to help, but you can educate them, and try to get them interested. Global warming hurts both species. After all if someone did something small, like unplugged something when it wasn’t being used, imagine what could happen. Works Cited Markle, Sandra How Many Baby Pandas? New York: Walker and Company, 2009 Green, Carl R. The Giant Panda Berkeley Heights, New Jersey: Enslow Publishers Inc., 2004 Horton, Casey. Endangered! Bears Tarrytown, New York: Marshall Cavendish Corporation, 1996 Ryder, Joanne. 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