Troodon

 

The Life of Animals | Troodon | Troodon dinosaurs were small, up to 2.4 meters (7.9 feet) in length and up to 50 kg (110 lb) in weight. Troodon includes the largest known troodontids. Troodon had some of the largest known group of dinosaurs, in relation to its body mass (comparable to modern birds) brains. A brain to another Troodon volume ratio was 31.5% to 63% in the form of a reptile a bird action nonavian Real. Troodon had Crista support eardrums, that at least in their own regions dorsal and ventral ossified cartilage remaining sensitive parts of Troodon receive metotic The leg was "laterally hypertrophied." The type of sample Troodon has caused classification problems, because the whole genre is based on a single tooth of the Judith River Formation. Troodon tooth was like "lacertilian" (lizard), sorted by Leidy, but reassigned as 1901 Nopcsa megalosaurid dinosaurs (Megalosauridae were past'm a taxon for most carnivorous dinosaurs). In 1924, Gilmore suggested that the tooth belonged Pachycephalosaur and Stegoceras Stegoceras herbivores was actually a junior synonym of Troodon (the similarity of the troodontid teeth of herbivorous dinosaurs continues to lead many paleontologists believe that these animals are omnivores).

In 1945, Charles Mortram Sternberg rejected the possibility that Troodon was Pachycephalosaur because of its resemblance to the teeth of other carnivorous dinosaurs. With Troodon now classified as a carnivore, Troodontidae the family is no longer used to hold the mushrooms dinosaurs, so Sternberg appointed a new family for their Pachycephalosauridae.  Sternberg initially classified as family Stenonychosaurus Coeluridae. Later, Sternberg suggested in 1951 that the Stenonychosaurus had a "very special PES" and Troodon "equally unusual teeth" are closely linked. With Saurornithoides Saurornithoididae Family Foundation. Inequalis Stenonychosaurus reclassified grow and Pectinodon Polyodontosaurus bakkeri as junior synonyms of Troodon Formosus. Currie was also a junior synonym of Saurornithoididae Troodontidae. In 1988, Gregory S. Paul continued and generally Saurornithoides mongoliensis Troodon as T. Currie Classification troodontid all devices in North America only species Troodon formosus has been widely adopted by other paleontologists, and has invited all samples once Stenonychosaurus as Troodon in the scientific literature of the early 21 century reported.

In 1991, George Olshevsky Lance formation fossils, which was originally called Pectinodon bakkeri but also subsequently assigned to Troodon Troodon formosus bakkeri species and some others (including Currie) on its fleet of different dinosaur fossils as Troodon inequalis (ex Stenonychosaurus) Training maintain.  From the holotype of T. Formoso is a single tooth, which can make a nomenclature Troodon dubium.  Troodon Judith River Formation and the upper Two Medicine formation of Montana known. Judith River Group of Alberta, the Horseshoe Canyon Formation of Alberta and Prince Creek Formation of Alaska There is some evidence that Troodon prefer colder climates, since it seems particularly abundant in the north and the Arctic and also during colder intervals. A possible early Maastrichtian Troodon teeth is in the bottom of the Javelina Formation of Texas and member of the Kirtland Formation of New Mexico Naashoibito.

Dinosaur eggs and nests were discovered by John R. Horner in 1983 in Montana Two Medicine Formation. Horner (1984) found bones and partial skeletons closely hypsilophodont Orodromeus nests in the same horizon isolated and described the eggs as Orodromeus Horner and Weishampel (1996) re-examine the embryos in eggs obtained and were found not Troodon Orodromeus. Varricchio et al. (1997) took this decision with more certainty when they described a partial skeleton of a Troödon adult (MOR 748) in contact with a clutch of five eggs (MOR 750) in a position likely hatching Varricchio et al. (1997) describe the exact structure Troödon nests. Fuller nests were between 16 (minimum 246 MOR) and 24 (MOR 963) eggs. Varricchio et al. (1997) was insufficient evidence to draw several nests Troodon reproductive biology infer characteristics. Crocodiles lay many eggs that are small compared to the size of the adult body. The birds lay fewer eggs larger. Troodon was intermediate, lay an egg about 0.5 kg for a 50 kg adult. This is 10 times more than the reptiles of the same mass, but two Troodon eggs amounted to about 1.1 kg of eggs of a bird of 50 kg.  MOR 363 was 22 empty eggs (hatched) and embryos in the eggs of MOR 246 were found, are in development are very similar, which means that all young hatched simultaneously. The authors estimated 45-65 days total adult nest attendance for laying, incubation and hatching.

Varricchio et al. (2008) examined the bone histology of Troodon specimen MOR 748 and found that he had no reason to bone resorption may indicate that it was a female egg. They also measured the relationship between the total volume of eggs in Troodon clutches of body weight in adults. Use graphically the correlation between this index and the type of parenting strategies birds and crocodiles there and found that the proportion of Troodon compatible with those of the birds, where only adult male incubates the eggs was. They concluded that women Troodon probably not the hatching of eggs, men have done, and this can be shared between dinosaurs and basal birds maniraptoran characters.

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Laughing Kookaburra

 

The Life of Animals | Laughing Kookaburra | Laughing Kookaburra is native to the Australian mainland, and has also been introduced in Tasmania, Kangaroo Island and Flinders Island. Laughing Kookaburra is a stocky bird about 45 cm (18 inches) long, with a large head, a prominent brown eyes and Big Bill. Body with a white or cream-colored head with a dark over each eye and slightly above the head brown band. The tail is red-brown rust orange with black stripes and white tips on the feathers. The name "Laughing Kookaburra" means bird "laugh" is used to determine the area between family groups. Bird starts hiccups low laugh, then throws his head back and laughed often several others join in. If a rival tribe is within earshot and replies, the whole family meets before finishing laugh current ring. Hearing kookaburras in full voice is one of the most extraordinary experiences of Australian nature, something the locals can not ignore, and some visitors, unless forewarned, the call can be found surprising

Kookaburra is the theme song of the popular Australian children, Kookaburra. Kookaburras occupy forest land (including forests) released by family groups and their laughter serves the same purpose as other birds called its boundaries. Common prey includes small mammals such as mice and the size of large insects, lizards, small birds and chicks, and most famously, snakes. Small prey is better, but sometimes large kookaburras creatures, including much longer than its body venomous snakes. During mating, the Laughing Kookaburra provided as shown in the behavior as wattlebird. The man then offers his own current captivity, with "oo oo oo" sound. When food is abundant, parents spend more time black chick, so the girls are not able to fight. It is not uncommon for kookaburras snatch food from the hands of the people, without notice, falling away. People often fed pieces of raw meat. 

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The leatherback turtle

 

The Life of Animals | The leatherback turtle | Turtles have the most hydrodynamic body design of a sea turtle with a large drop-shaped body. A nice pair of front flippers power the turtles in the water. Like other sea turtles, the leatherback turtle has crushed the front legs adapted for swimming in the open sea. The fins are the most important sounds in proportion to its body among sea turtles exist. Leatherback front flippers can grow up to 2.7 meters (8.9 feet) large sample size and large flippers (even in comparison to its body) of any sea turtle. Leatherback turtle covering her eggs, Turtle Beach, Tobago The leatherback has several characteristics that distinguish it from other sea turtles. Leatherbacks are unique among reptiles that fail in their scale β-keratinCounter-demonstration is the brightest in the turtle. Dermochelys coriacea adults average of 1 to 1.75 m (3.3 to 5.74 meters) carapace length, 1.83 to 2.2 m (6.0 to 7.2 feet) in length and weigh 250,700 kg (550-1500 lb). Surprisingly, the leatherback turtle is much larger than any other sea turtles hatch, since the transmission 61.3 mm (2.41 inches) carapace length and weighs about 46 g (1.6 oz) when newly hatched.

The first studies of leatherback metabolic rates found lute had predicted resting metabolic rate about three times higher than that of a reptile of their size. This creates constant heat swimming muscle derived. Adults were Lute with the body temperature of 18 ° C (32 ° F) floating above the water found in. Leatherback turtles are one of the creatures of the deep sea diving. The 1992 edition of the Guinness Book of Records presents the leatherback turtle moving 35.28 km / h (21.92 hours miles) in water. The leatherback turtle is a cosmopolitan species with a global reach. There are three genetically distinct populations in the Atlantic Ocean, the eastern Pacific and western Pacific Ocean. While nesting beaches have been identified in the region, leatherback populations in the Indian Ocean are generally not assessed and weighted. The leatherback turtle population in the Atlantic beaches of the region. Unlike other turtles, feeding areas for leatherback turtles are in colder waters, where there is plenty of jellyfish prey, which extends its range. However, few beaches on both sides of the Atlantic provide nesting sites. Overlooking the Atlantic coast of Canada, leatherback turtles feed in the Gulf of St. Lawrence near Quebec and as far north as Newfoundland and Labrador.

The beaches of the National Park Mayumba Mayumba, Gabon host the largest nesting population on the African continent and probably in the world, with about 30,000 turtles visit the beaches every year in April. Looking north-east coast of South America, varied selection of some of Guyana and Suriname are the most important sites for nesting of several species of sea turtles, the leatherback turtle, for the most part. A few hundred nest annually on the eastern coast of Florida. In Costa Rica, the beaches and nesting sites Parismina Gandoca. Pacific leatherbacks divide into two populations. Forage is the population of the South Pacific in the world, in the waters off the western coast of South America, nesting in Mexico, Panama, El Salvador and Costa Rica. The continental United States offers two major leatherback feeding areas. Further north on the Pacific coast of Canada, leatherbacks visit the beaches of British Columbia.

Rantau Abang beach Terengganu, Malaysia, once the largest breeding population of the world, home to 10,000 nests per year. Conservation efforts began in 1960 were ineffective because they are exposed to the excavation and incubation of eggs in artificial places accidentally eggs high temperatures. And 'well known that in 1980 that sea turtles are sex determination depends on the temperature, but it is suspected that the younger women incubated artificially In 2008, two turtles nest in Rantau Abang and, unfortunately, eggs were infertile.The leatherback turtle is found mainly in the open sea. The lute follow their jellyfish prey throughout the day, that the turtles "prefer" the deeper waters during the day, and the shallow waters at night (when the jellyfish in the water column), this strategy is often. Turtle hunting in very cold water An individual was actively hunting in waters whose temperature is 0.4 ° C (32.7 ° F).

Beaches favorite breeding places of the continent is facing deep water and they seem to avoid the sites protected by coral reefs D. Leatherback turtles adults feed almost exclusively on jellyfish. Due to the nature of the force-feeding, helps to control the populations of jellyfish leatherback turtles. Pacific leatherbacks migrate more than 6,000 miles (9,700 kilometers) across the Pacific from their nesting sites in Indonesia to eat California jellyfish. One of the reasons for their state of emergency in plastic bags floating in the sea of plastic bags by mistake lute Pacific jellyfish, took about a third of adult leatherbacks plastic. Plastics in the ocean off the west coast city where leatherback turtles, California, with power increase of 19 billion plastic bags per year. Several species of sea turtles ingest marine debris especially plastics, and even small amounts of debris can kill sea turtles by obstructing their digestive tracts. Dilution of nutrients, if the food move plastic intestine, according to the gain of nutrients and growth factors occurs so turtles. Like all sea turtles begin, the leatherback turtle, so that the miners of the sand of their nesting beaches. Leatherbacks are many predators and the first years of life. Once at sea, lute teenagers still eat cephalopods, requiem sharks and diversity of large fish. Nesting females were looted by jaguars in tropical America. Apparently, adult leatherbacks is aggressively defended by predators. Dermochelys young people spend more time in tropical waters than adults.

With offspring with special benefits While other species of sea turtles almost always return to their hatching beach, leatherbacks may choose another beach area. Nesting beaches and the angle of inclination of the deep sea is a vulnerability for the turtles because such beaches easily erode. The nest environment typically includes a dark wooded area near the beach. Females excavate a nest above the high tide line with their flippers. About nine days between nesting events. Clutch size averages about 110 eggs, of which 85% were viable. The eggs hatch after 60 to 70 days. Like other reptiles, the temperature of the nest determines the sex of the offspring. Dig evening, infants in area and walk towards the sea Leatherback nesting seasons vary by location, but occurs from February to July in Parismina, Costa Rica. Farther east in French Guiana, nesting from March to August The Atlantic leatherback nest from February to July in South Carolina in the United States Virgin Islands in the Caribbean, Suriname and Guyana. People around the world still gather sea turtle eggs. In Southeast Asia, egg collection resulted in countries like Thailand and Malaysia to a near-total collapse of local nesting. In Malaysia, where the turtle has practically disappeared, the eggs are considered a delicacy. In Birds, small mammals, and other opportunists dig up the nests of turtles and consume eggs. Shorebirds feed on crustaceans and sea battles in infants. Leatherbacks are a little 'less than other types of anthropogenic threats sea turtles. The nests are attacked by humans in places such as Southeast Asia. Many human activities, indirectly Dermochelys populations. As a pelagic species, D. coriacea is occasionally caught as by-catch. Since the larger devices EXCLUDER turtle sea turtles, life can be ineffective with mature adults. High levels of phthalate was measured in the egg yolk "

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Grasshopper

 

The Life of Animals | Grasshopper | No coherent distinction between taxonomic species of locusts and grasshoppers, the basis for the definition of a species swarm form under appropriate intervals. In English, the term "locust" is used for the grasshopper species which are morphologically and behavioral change the movement, the formation of clouds that grow immature stages called bands hopper. Charles Valentine Riley and Norman Criddle were also involved in the development of understanding and control locusts. Research at Oxford University has discovered a swarm behavior is a response to overcrowding. This causes the locust to change color, eat much more, and much easier to raise.

Locusts in the Bible and the Qur'an, one of the biblical plagues of Egypt, where locusts ate all the crops of Egypt. In an article published in the January 30, 2009 edition of the AAAS Science Journal, Anstey, Rogers, et al. demonstrated when locusts are, their nervous systems release serotonin so attracted to each other, a prerequisite for swarming. Swarms of locusts have short antennae or antennas and auditory organs in the abdomen (posterior segment of the body). From winged adults fly in swarms, locusts may be carried by the wind hundreds of miles from their spawning grounds, landing devour all vegetation. The migratory locust (Locusta migratoria) from Europe to China, and even small swarms may cover several square miles, and weigh thousands of tons.

The largest known swarm covered 513,000 km ², comprising about 12.5 trillion insects and a weight of 27.5 million tonnes. A biological pesticide for the control of locusts in Africa has been tested by a multinational team in 1997. Dried fungal spores sprayed in breeding areas Metarhizium species pierce the locust exoskeleton on germination and penetration of the body cavity, causing death. The fungus is spread by insects and insect persists in the region, making repeated treatments unnecessary.

The extinction of the Rocky Mountain locust is a source of wonder. The international agenda is LUBILOSA promote non-chemical methods of control to find lobster. Different cultures around the world eat insects. Even Islamic law and Jewish food, eating other insects grasshoppers to eat after the ban, particularly as food for the hungry poor.

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Kemp's Ridley Sea Turtle

 

The Life of Animals | Kemp's Ridley Sea Turtle | Ridley sea turtles generally prefer hot water, but they live in the water as far north as New Jersey, in the Gulf of Mexico and Florida, often migrate to live in the waters of Louisiana. The range includes the Atlantic Ocean and the Gulf of Mexico.  Then, in the northwest Atlantic and Gulf of Mexico runs as they grow to maturity. These turtles change color as they mature. The breeding season for these turtles is April to August They nest primarily in the Mexican state of Tamaulipas, but sometimes the Father Iceland, Texas, United States. The estimated number of women nesting in 1947 was 89,000, but dropped to about 7702-1985 Women nest three times during the season, from 10 to 28 days between clusters. Incubation lasts 45-70 days. There are, on average, about 110 eggs per clutch.

At least one source also refers to Kemp "turtle grief." In his book The Rescue largest Ridley, Pamela Philips argued the names of fishermen, turtles die after "turned turtle" was observed (rear) embossed. Kemp Ridley Mexico protected the first time in 1960. United States was the first under the Endangered Species Conservation Act Kemp 1970 December 2, 1970 is included, then under the Endangered Species Act (ESA) in 1973. One of the mechanisms used to protect turtles in fishing nets, the turtle excluder device (TED). Since the greatest threat to the population of Kemp Ridley sea turtles are shrimp, connect your device to the shrimp trawl.

In September 2007, Corpus Christi, Texas, wildlife officials found a record 128 Kemp's ridley sea beaches Ridley nesting in Texas, including 81 in North America Padre Iceland (Iceland Padre National Seashore) and four officials Iceland fauna Wild Mustang released 10,594 Kemp Ridley babies along the Texas coast this year. Turtles are popular in Mexico as boot material and food. The Deepwater Horizon oil spill threatens a wide variety of marine life, dolphins blue crabs. April 30, 2010, 10 days after the accident on the Deepwater Horizon, 156 dead sea turtles have been reported, most were Kemp Ridley. Louisiana Department of Wildlife and Fisheries biologists and security guards have rescued Kemp Ridley in Grand Isle

Threatened marine species that frequent the Gulf, only the Kemp's ridley is based on the region as a single pool. The general plan is to collect about 70,000 eggs in the nests of sea turtles on the beaches of Alabama and Florida before you swim, and slip into the Deepwater Horizon explosion Louisiana.

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Green Anaconda

 

The Life of Animals | Green Anaconda | The green anaconda is the longest snake in the world, reaching more than 6.6 meters (22 feet) long. It is the largest snake native to the Americas and flaky probably the largest species of snakes or electricity. Although the reticulated python is longer, the anaconda is the heaviest cut pipe with a 4.5 7.4 m higher green anaconda python. The longest and heaviest () scientifically analyzed samples was a woman 521 cm (17.09 feet) long and weighs 97.5 kg (215 lb). The remoteness of the snake habitat is found historically difficult to collect and return samples. The large sample transport museums, particularly the sharp decline, it is difficult (but not the return of the much larger and heavier crocodilian specimens occur). Reports observing animals that are not shown, are always questionable, as even trained scientists often overestimated the size of anacondas before recording. For more information, visit those who live in the periods under the pressure of the population longer, up to larger sizes. There are many historical accounts of green anacondas often ridiculously improbable sizes. Many zoologists (notably Henry Walter Bates and Alfred Russel Wallace, etc): Please note that the rumors of snakes by 30 or 40 yards, but in any case, direct observations of snakes by 20 feet long were limited.

Almost all samples over 6 m (20 ft), including a critically acclaimed shows of 11.36 m (37.3 feet) long, no copies, including the skin and bones. Herpetologist while measured in Colombia in 1978, William W. Lamar met with a large sample of women, 7.5 meters (25 ft) and weigh approximately 136-180 kg (300,400 pounds). With a maximum circumference of 112 cm (3.67 feet) from a woman claiming 7.9 m (26 ft) long, shot in 1963 in the Nariva Swamp, Trinidad, with 1.5 m (4, 9 feet ) crocodile. If the sample (19.5 ft), 5.94 m long, weighed 91 kg (200 lb). The approximate weight of an anaconda of 8 m (26 ft) of at least 200 kg (440 lb). Weight varies considerably, large samples, depending on the environment and feed the latter is in the previous example Verrill After very large, reduced to 163 kg (360 lb), while another copy is too large, to 5.06 m (16 ft 6 in) weighs only 54 kg (120 lb). In 10th Edition of the famous Systema naturae 1758, Carl Linnaeus cited descriptions and Laurens Albertus Seba Theodore Gronovius Boa various murine build his new gender, eight other species, including Boa constrictor.

The first examples were immature murine Boa is 2.5 to 3 m (75 to 90 cm) long. In 1830, Johann Georg Eunectes Wagler same sex "good swimmer" Boa murina Linnaeus for further samples were known and described. Since the male from the female-specific murine Eunectes murinus renamed America. Serpens American testudinacea murium insidiator" turtle pattern (spotted) American slang, a predator lurking in mice and rats murinus The Latin adjective (murine) in this case means "mouse" or "mouse connected" refers to "change his spots" and not "gray mouse" that people often do not display correctly for E. murinus. Early English-based sources, such as George Shaw, the murine Boa as "rat boa" and Penny Cyclopaedia (Vol. 5) entry for Boa said: "The common name implies, in the Waiting for some mice, mice found rufus maculis rotundatis up." red-brown "Boa appearance of murine Latin Linnaeusdescribed". Rounded spots at the top] and not gray on the description of the colors green anaconda immediate names refer others by various authors on the general brown, blue, green or gray. Popular names for Eunectes murinus include Green Anaconda, Anaconda, Anaconda boa common water.

Local names in South America, the Spanish term mata-bull, meaning "bull killer" and Native American words Sucuri (Tupi) and yaqumama in the Peruvian Amazon, the "Mother of Waters" Quechua language of the people in the jungle Yaqurunas or " water people ". Anacondas often men push the tongue, that the presence of the chemical signal wife Many men are often the same woman. This ball is like a wrestling match between idle men, fighting for every occasion. Women with During mating, males use their spurs in the female generation. They display their aggressive campaign against the woman's body while scratching his footsteps. Mating approaches its climax when males stimulus spurs cause female snake their cloaca to increase the area of the cloaca to move two tubes. The men coils its tail with the female and her mate. The strongest man and is often the biggest winner. However, women are physically bigger and stronger, and may decide to choose between men. Courtship and mating occur almost exclusively in the water.

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Elk

 

The Life of Animals | Elk | Early European explorers in North America, who were with the smaller deer Europe think more North America animals such as moose, elk and therefore the name of that is the name of common European elk. Moose is the word American elk Norse, Scandinavian Elgr ELG / elk ALG and German, all of which to the animal in North America known as Moose relate the following. This name will be used primarily for the Asian subspecies (Altai wapiti, Tian Shan wapiti, moose Manchuria and Alashan wapiti), moose Eurasia, because the name is still used by moose. Especially on Caspian red deer (Cervus elaphus maral), a subspecies of deer It is a subspecies of elk in Mongolia called the Altai wapiti (Cervus canadensis sibiricus), also known as maral Altai, Siberia Siberia known moose or elk. Populations vary in shape and size of timber behavior, body size, coloration and mating.

Of the six subspecies of elk known inhabited North America in historical times have four remain, including the Roosevelt (C. canadensis roosevelti), Tule (C. canadensis nannodes), Manitoba (C. canadensis manitobensis) and Rocky Mountain (C. canadensis nelsoni ). Eastern subspecies of elk (C. canadensis) and Merriam Elk (C. canadensis merriami) were described disappeared for at least a four subspecies in Asia are the century Altai Wapiti (C. canadensis sibiricus) and the Tianshan Wapiti (C. canadensis songaricus). Two different subspecies in China and Korea are the Manchurian wapiti (C. canadensis xanthopygus) and Alashan wapiti (C. canadensis alashanicus). The Manchurian wapiti is darker and redder the other populations. Alashan wapiti of north central China is the smallest of all subspecies, has the lightest coloration and is the least investigated. Biologist Valerius Geist, who wrote about the different species of deer in the world, said that there are only three subspecies of elk.

Recent studies suggest that it is not the DNA of more than three or four subspecies of elk. All American forms appear to belong to a subspecies (Cervus canadensis canadensis). Also Siberian elk (Cervus canadensis sibiricus) are more or less identical to the American forms and therefore belong to the subspecies, also. However the Manchurian wapiti (Cervus canadensis xanthopygus) is significantly different differ from the shape Siberia, but not from the Alashan wapitiThe Chinese subspecies are sometimes considered separate species, namely the Asian red deer (Cervus wallichi), which also deals with deer Kashmir Adult elk usually stay in single-sex groups for most of the year. If no bull back, grab the timber and fight bulls sometimes erect serious injury. Dominant bulls follow groups of cows during the rut, from August to early winter. A bull will defend his harem of 20 cows or bulls against rivals and enemies. Only males have large harems and breeding success peaks at the age of eight years. Toros young adults keep a harem later in the breeding season than bulls in their prime. A bull can with a harem rarely feeds and lose up to 20 percent of their body weight. When the females are ready to give birth, they tend to isolate themselves from the herd and remain isolated until the calf is large enough to escape predators. Elk calves are as big as an adult white-tailed deer at the age of six months. The gestation period is the same for all subspecies. Elk live 20 years or more in captivity but average 10 to 13 years in the wilderness. Coyote packs feed primarily on elk calves, but sometimes a weakened adult winter. In the vast Yellowstone ecosystem, including Yellowstone National Park, bears are major predators of calves. The main enemies in Asia are the wolf, dhole, brown bear, Siberian tiger, Amur Leopard and Snow Leopard. Lynx and wild boars sometimes hunt for Asian elk calves. Male elk retain their antlers for more than half of the year and are less likely to group with other males when they have antlers.

After the routine, women form large herds of up to 50 people. As is the case with many species of deer, especially in the mountainous regions, elk migrate to higher altitudes is in the spring after snow fell, and the opposite direction in the fall. Hunting pressure also impacts on migration and movements. Roosevelt Elk are usually settled by less seasonal variability of food sources. Numbers Yellowstone elk herd large ecosystem of more than 200,000 people in the spring and fall, to participate in the longest elk migration in the continental U.S. Elk in the south of Yellowstone National Park and national forest around south of the town of Jackson, Wyoming, where the winter for a maximum of six months in the National Elk Refuge. Environmentalists will ensure the herd is fed well in the harsh winters. A large number of elk that live in the ecosystem of the northern Greater Yellowstone lower elevations in Montana to migrate mainly in the north and west. Elk have played an important role in the cultural history of the peoples. Pictographs and petroglyphs of elk were carved into cliffs thousands of years ago by the Anasazi of the southwestern United States youngest Indian tribes, including the Kootenai, Cree, Blackfeet, Ojibwa and Pawnee, produced blankets and fur robes moose. At birth, Lakota men were to promote elk tooth for a long life because it's too bad as the last piece of dead moose. The moose is considered a high level of sexual activity and young Lakota men who had dreamed of elk an image of the mythical representation of the dynamics in their "hands" on the court as a sign of sexual potency have. Neolithic rock carvings from Asia are fewer female moose antlers, which was interpreted as a symbol of rebirth and food. The Rocky Mountain Elk is the official animal of the State of Utah. A picture of a moose and a moose on the state flag of Michigan appear. The Benevolent and Protective Order of Elks (BPOE) chose the elk as its namesake, as many of its attributes seemed appropriate for the culture of fraternity members.

Elk kept in captivity or kept for the production of venison and velvet collection. All Asian subspecies, as well as other deer have been for their antlers in central and eastern Asia by Han Chinese, Turkic peoples, Tungusic peoples, Mongolians and Koreans raised. Elk farms are relatively common in North America and New Zealand. Modern applications are decorative, but elk skin shoes, gloves and belts are not uncommon. Since 1967, the Boy Scouts of America at the National Elk Refuge staff have assisted in Wyoming by collecting wood that are made every winter. In 2010 2.520 kg (5600 pounds) auction of wood, bringing more than $ 46,000.

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