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108-532: The Cimarron National Grassland once consisted of 108,175 acres (43,777 ha) of Great Plains bisected by the Cimarron River , though after the flood on January 29, 2023, this no longer remains true. The elevations on the Grassland range from 3,100 to 3,700 feet (940 to 1,130 m). The terrain is mostly flat, sloping downward west to east, although bluffs rise about one hundred feet (30 m) above

216-542: A Madison, Wisconsin -area pet swap from an unquarantined Gambian pouched rat imported from Ghana , several prairie dogs in captivity acquired monkeypox , and subsequently a few humans were also infected. This led the Centers for Disease Control and Prevention (CDC) and Food and Drug Administration (FDA) to issue a joint order banning the sale, trade, and transport within the United States of prairie dogs (with

324-495: A keystone species , with their mounds often being used by other species. Their mound-building encourages grass development and renewal of topsoil , with rich mineral , and nutrient renewal in the soil, which can be crucial for soil quality and agriculture. They are extremely important in the food chain , being important to the diet of many animals such as the black-footed ferret , swift fox , golden eagle , red tailed hawk , American badger , and coyote . Other species, such as

432-489: A veterinarian under quarantine procedures. On 8 September 2008, the FDA and CDC rescinded the ban, making it once again legal to capture, sell, and transport prairie dogs. Although the federal ban has been lifted, several states still have in place their own ban on prairie dogs. The European Union has not lifted its ban on imports from the U.S. of animals captured in the wild. Major European Prairie Dog Associations, such as

540-445: A broad denuded area as a piedmont deposit by the rivers which issued from the mountains. Since then, it has been more or less dissected by the erosion of valleys. The central section of the plains thus presents a marked contrast to the northern section. While the northern section owes its smoothness to the removal of local gravels and sands from a formerly uneven surface by the action of degrading rivers and their inflowing tributaries,

648-602: A broad stretch of country underlain by nearly horizontal strata extending westward from the 97th meridian west to the base of the Rocky Mountains , a distance of 300 to 500 mi (480 to 800 km). It extends northward from the Mexican boundary far into Canada. Although the altitude of the plains increases gradually from 600 ft (180 m) or 1,200 ft (370 m) on the east to 4,000–5,000 ft (1,200–1,500 m) or 6,000 ft (1,800 m) near

756-412: A common space, employees sometimes use the term "prairie dogging" to refer to the action of several people simultaneously looking over the walls of their cubicles in response to a noise or other distraction. This action is thought to resemble the startled response of a group of prairie dogs. The same term is also vulgar slang to refer to one who is on the verge of defecating (often involuntarily), with

864-592: A competing herbivore. Prairie dogs live mainly at altitudes ranging from 2,000 to 10,000 ft (600 to 3,000 m) above sea level. The areas where they live can get as warm as 38 °C (100 °F) in the summer and as cold as −37 °C (−35 °F) in the winter. As prairie dogs live in areas prone to environmental threats, including hailstorms, blizzards, and floods, as well as drought and prairie fires, burrows provide important protection. Burrows help prairie dogs control their body temperature ( thermoregulation ) as they are 5–10 °C (41–50 °F) during

972-708: A dog's bark. The name was in use at least as early as 1774. The 1804 journals of the Lewis and Clark Expedition note that in September 1804, they "discovered a Village of an animal the French Call the Prairie Dog". Its genus, Cynomys , derives from the Greek for "dog mouse" (κυων kuōn , κυνος kunos – dog; μυς mus , μυός muos – mouse). The prairie dog is known by several indigenous names. The name wishtonwish

1080-476: A few exceptions). The disease was never introduced to any wild populations. The European Union also banned importation of prairie dogs in response. All Cynomys species are classed as a "prohibited new organism" under New Zealand's Hazardous Substances and New Organisms Act 1996 , preventing them from being imported into the country. Prairie dogs are also very susceptible to bubonic plague , and many wild colonies have been wiped out by it. Also, in 2002,

1188-633: A few horses were found by the Spanish among the Indians living at the mouth of the Colorado River of Texas and the Caddo of eastern Texas had a sizeable number. Prairie dog Cynomys gunnisoni Cynomys leucurus Cynomys ludovicianus Cynomys mexicanus Cynomys parvidens Prairie dogs (genus Cynomys ) are herbivorous burrowing ground squirrels native to

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1296-603: A gradual transition, this rainfall line may be taken to divide the drier plains from the moister prairies. However, in Canada the eastern boundary of the plains is well defined by the presence of the Canadian Shield to the northeast. The plains (within the United States) may be described in northern, intermediate, central and southern sections, in relation to certain peculiar features. In Canada, no such division

1404-515: A large group of prairie dogs in captivity in Texas were found to have contracted tularemia . The prairie dog ban is frequently cited by the CDC as a successful response to the threat of zoonosis . Prairie dogs that were in captivity at the time of the ban in 2003 were allowed to be kept under a grandfather clause , but were not to be bought, traded, or sold, and transport was permitted only to and from

1512-652: A large vacuum device. They can be difficult to breed in captivity, but breed well in zoos. Removing them from the wild was a far more common method of supplying the market demand. They can be difficult pets to care for, requiring regular attention and a very specific diet of grasses and hay. Each year, they go into a period called rut that can last for several months, in which their personalities can drastically change, often becoming defensive or even aggressive. Despite their needs, prairie dogs are very social animals and come to seem as though they treat humans as members of their colony. In mid-2003, due to cross-contamination at

1620-452: A nursery chamber with other mothers; since most nursing occurs at night, this may be a case of communal nursing. In the case of the latter, others suggest communal nursing occurs only when mothers mistake another female's young for their own. Infanticide is known to occur in prairie dogs. Males that take over a family group will kill the offspring of the previous male. This causes the mother to go into estrus sooner. However, most infanticide

1728-472: A territory defends it, and antagonistic behavior occurs between two males of different families to defend their territories. These interactions may happen 20 times per day and last five minutes. When two prairie dogs encounter each other at the edges of their territories, they stare, make bluff charges, flare their tails, chatter their teeth, and sniff each other's perianal scent glands. When fighting, prairie dogs bite, kick, and ram each other. If their competitor

1836-687: A town, called "wards", which are separated by a physical barrier. Family groups exist within these wards. Most prairie dog family groups are made up of one adult breeding male, two or three adult females, and one or two male offspring and one or two female offspring. Females remain in their natal groups for life, thus are the source of stability in the groups. Males leave their natal groups when they mature to find another family group to defend and breed in. Some family groups contain more breeding females than one male can control, so have more than one breeding adult male in them. Among these multiple-male groups, some may contain males that have friendly relationships, but

1944-424: A very descriptive language and have calls for any potential threat. Alarm response behavior varies according to the type of predator announced. If the alarm indicates a hawk diving toward the colony, all the prairie dogs in its flight path dive into their holes, while those outside the flight path stand and watch. If the alarm is for a human, all members of the colony immediately rush inside the burrows. For coyotes,

2052-594: A west-northwest direction in what is now Oklahoma and Texas which is now known as the De Soto Trail. The Spanish thought that the Great Plains were the location of the mythological Quivira and Cíbola , a place said to be rich in gold. People in the southwest began to acquire horses in the 16th century by trading or stealing them from Spanish colonists in New Mexico. As horse culture moved northward,

2160-463: Is 110 °F (43 °C) and the all-time low is −22 °F (−30 °C). The Cimarron River flows through the grassland. From late summer through winter it is usually dry above ground, yet lush vegetation still grows on the banks. Middle Spring flows year round and beaver dams create pools of water nearby. Point of Rocks , a large rock outcropping overlooking the Cimarron River valley,

2268-404: Is about 500 mi (800 km) east to west and 2,000 mi (3,200 km) north to south. Much of the region was home to American bison herds until they were hunted to near extinction during the mid/late-19th century. It has an area of approximately 500,000 sq mi (1,300,000 km ). Current thinking regarding the geographic boundaries of the Great Plains is shown by this map at

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2376-446: Is around their size or smaller, the females participate in fighting. Otherwise, if a competitor is sighted, the females signal for the resident male. Prairie dog copulation occurs in the burrows, which reduces the risk of interruption by a competing male. They are also at less risk of predation. Behaviors that signal that a female is in estrus include underground consorting, self-licking of genitals, dust-bathing, and late entrances into

2484-494: Is at its lowest when the females are pregnant, which is also when the males are depleted from breeding. Despite their name, a prairie dog skull has a condylobasal length of between 5.2-6.4 cm shorter than the skull of a canine or actual dog which is between 11.39–17.96 cm in length. The average lifespan of a prairie dog in the wild is 8 to 10 years. Prairie dogs are chiefly herbivorous, although they occasionally eat insects . They feed primarily on grasses and small seeds. In

2592-445: Is done by close relatives. Lactating females will kill the offspring of a related female both to decrease competition for the female's offspring and for increased foraging area due to a decrease in territorial defense by the victimized mother. Supporters of the theory that prairie dogs are communal breeders state that another reason for this type of infanticide is so that the female can get a possible helper. With their own offspring gone,

2700-526: Is extraordinarily smooth. It is very dry, except for occasional shallow and temporary water sheets after rains. Llano is separated from the plains on the north by the mature consequent valley of the Canadian River , and from the mountains on the west by the broad and probably mature valley of the Pecos River . On the east, it is strongly undercut by the retrogressive erosion of the headwaters of

2808-469: Is over, the male is no longer interested in the female sexually, but will prevent other males from mating with her by inserting copulatory plugs . For black-tailed prairie dogs, the resident male of the family group fathers all the offspring. Multiple paternity in litters seems to be more common in Utah and Gunnison's prairie dogs. Mother prairie dogs do most of the care for the young. In addition to nursing

2916-506: Is peculiarly elaborate. Known as the Badlands , it is a minutely dissected form with a relief of a few hundred feet. This is due to several causes: The central section of the Great Plains, between latitudes 42° and 36° , occupying eastern Colorado and western Kansas , is mostly a dissected fluviatile plain. That is, this section was once smoothly covered with a gently sloping plain of gravel and sand that had been spread far forward on

3024-574: Is selfish or altruistic. Prairie dogs may alert others to the presence of a predator so they can protect themselves, but the calls could be meant to cause confusion and panic in the groups and cause the others to be more conspicuous to the predator than the caller. Studies of black-tailed prairie dogs suggest that alarm-calling is a form of kin selection, as a prairie dog's call alerts both offspring and indirectly related kin, such as cousins, nephews, and nieces. Prairie dogs with kin close by called more often than those that did not have kin nearby. In addition,

3132-409: Is their susceptibility to bubonic plague . As of July 2016 the U.S. Fish and Wildlife Service plans to distribute an oral vaccine it had developed by unmanned aircraft or drones. Until 2003, primarily black-tailed prairie dogs were collected from the wild for the exotic pet trade in Canada, the United States, Japan, and Europe. They were removed from their burrows each spring, as young pups, with

3240-455: Is used: the climatic and vegetation regions are more impactful on human settlement than mere topography, and therefore the region is split into (from north to south), the taiga plains, boreal plains , aspen parkland , and prairie ecoregion regions. The northern section of the Great Plains, north of latitude 44° , includes eastern Montana , eastern Wyoming , most of North Dakota and South Dakota , southwestern Minnesota and portions of

3348-581: The Atlas of Canada . In terms of human geography, the term prairie is more commonly used in Canada, and the region is known as the Canadian Prairies , prairie provinces or simply "the prairies". The North American Environmental Atlas , produced by the Commission for Environmental Cooperation , a North American Free Trade Agreement (NAFTA) agency composed of the geographical agencies of

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3456-563: The American burying beetle (Nicrophorus americus), Salt Creek Tiger Beetle (Cinidela nevadica lincolniana), Great Plains Giant Tiger Beetle (Amblycheila chylindriformis), Microstylum morosum , Bean leaf beetle (Cerotoma trifurcata), Great Plains Camel Cricket (Daihinia brevipes), and the Great plains spittlebug (Lepyronia gibbosa). Some species in the Great plains have gone extinct in

3564-593: The Arikara , Mandan , Pawnee , and Wichita . Wars with the Ojibwe and Cree peoples pushed the Lakota (Teton Sioux) west onto the Great Plains in the mid- to late-17th century. The Shoshone originated in the western Great Basin and spread north and east into present-day Idaho and Wyoming. By 1500, some Eastern Shoshone had crossed the Rocky Mountains into the Great Plains. After 1750, warfare and pressure from

3672-825: The Department of the Interior . In contrast, U.S. Forest Service , an agency of the U. S. Department of Agriculture , administers the National Forests and National Grasslands, under a multiple-use concept. By law, the U.S. Forest Service must consider all resources, with no single resource emphasized to the detriment of others, including water, soil, grazing, timber harvesting, and minerals (mining and drilling), as well as recreation and conservation of fish and wildlife. Each individual state also administers state lands, typically smaller areas, for various purposes including conservation and recreation. Grasslands are among

3780-968: The Great Plains toad ( Anaxyrus cognatus ), plains leopard frog ( Lithobates blairi ), and plains spadefoot toad ( Spea bombifrons ). Some species predominately associated with various river basins in the Great Plains include sturgeon chub ( Macrhybopsis gelida ), peppered chub ( Macrhybopsis tetranema ), prairie chub ( Macrhybopsis australis ), western silvery minnow ( Hybognathus argyritis ), plains minnow ( Hybognathus placitus ), smalleye shiner ( Notropis buccula ), Arkansas River shiner ( Notropis girardi ), Red River shiner ( Notropis bairdi ), Topeka shiner ( Notropis topeka ), plains topminnow ( Fundulus sciadicus ), plains killifish ( Fundulus zebrinus ), Red River pupfish ( Cyprinodon rubrofluviatilis ), and Arkansas darter ( Etheostoma cragini ). The great plains also has many invertebrate species living here both alive and extinct such as

3888-669: The Taiga Plains and Boreal Plains ecozones in Northern Canada . "Great Plains", or Western Plains , is also the ecoregion of the Great Plains or alternatively the western portion of the Great Plains. The Great Plains lie across both the Central United States and Western Canada , encompassing: The term "Great Plains" is used in the United States to describe a sub-section of the even more vast Interior Plains physiographic division, which covers much of

3996-449: The golden-mantled ground squirrel , mountain plover , and the burrowing owl , also rely on prairie dog burrows for nesting areas. Even grazing species, such as plains bison , pronghorn , and mule deer have shown a proclivity for grazing on the same land used by prairie dogs. Nevertheless, prairie dogs are often identified as pests and exterminated from agricultural properties because they are capable of damaging crops, as they clear

4104-477: The golden-mantled ground squirrel , mountain plover , and the burrowing owl , also rely on prairie dog burrows for nesting areas. Grazing species, such as plains bison , pronghorn , and mule deer , have shown a proclivity for grazing on the same land used by prairie dogs. Prairie dogs have some of the most complex systems of communication and social structures in the animal kingdom . The prairie dog habitat has been affected by direct removal by farmers, and

4212-423: The grasslands of North America . There are five recognized species of prairie dog: black-tailed , white-tailed , Gunnison's , Utah , and Mexican prairie dogs . In Mexico, prairie dogs are found primarily in the northern states, which lie at the southern end of the Great Plains : northeastern Sonora , north and northeastern Chihuahua , northern Coahuila , northern Nuevo León , and northern Tamaulipas . In

4320-556: The Blackfoot, Crow, Lakota, Cheyenne, and Arapaho pushed Eastern Shoshone south and westward. Some of them moved as far south as Texas, emerging as the Comanche by 1700. The first known contact between Europeans and Indians in the Great Plains occurred in what is now Texas, Kansas, and Nebraska from 1540 to 1542 with the arrival of Francisco Vázquez de Coronado , a Spanish conquistador. In that same period, Hernando de Soto crossed

4428-503: The Canadian provinces including southeastern Alberta , southern Saskatchewan and southwestern Manitoba . The strata here are Cretaceous or early Tertiary , lying nearly horizontal. The surface is shown to be a plain of degradation by a gradual ascent here and there to the crest of a ragged escarpment, the escarpment-remnant of a resistant stratum. There are also the occasional lava -capped mesas and dike formed ridges, surmounting

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4536-462: The Center for Great Plains Studies, University of Nebraska–Lincoln . This definition, however, is primarily ecological, not physiographic. The Boreal Plains of Western Canada are physiographically the same, but differentiated by their tundra and forest (rather than grassland) appearance. The term "Great Plains", for the region west of about the 96th meridian west and east of the Rocky Mountains ,

4644-587: The Cimarron National Grassland are reached 7 mi (11 km) north of Elkhart via highway 27. Activities include camping, hiking, horseback riding, fishing, hunting, and a car tour. The grassland includes 23 miles (37 km) of the Santa Fe National Historic Trail . The ruts left by wagon trains are still visible. A mowed strip of land, called a companion trail, 19 miles (31 km) long, runs alongside

4752-557: The Comanche were among the first to commit to a fully mounted nomadic lifestyle. This occurred by the 1730s, when they had acquired enough horses to put all their people on horseback. The real beginning of the horse culture of the plains began with the Pueblo Revolt of 1680 in New Mexico and the capture of thousands of horses and other livestock. In 1683 a Spanish expedition into Texas found horses among Native people. In 1690,

4860-482: The Grassland. In May 2011, there was a substantial wildfire known as the Tunner Fire, which blanketed approximately one half of the park along with several thousands of acres of private prairie and the campground. However, rains in the spring of 2012 brought about a significant turnaround. The land greened up and the park's management reopened many of its sections. Access to most of the recreation opportunities in

4968-551: The Great Plains and into the valleys and lower elevations of the eastern Rocky Mountains and portions of the American southwest . Other snakes include the plains hog-nosed snake ( Heterodon nasicus ), western milksnake ( Lampropeltis gentilis ), great plains ratsnake ( Pantherophis emoryi ), bullsnake ( Pituophis catenifer sayi ), plains black-headed snake ( Tantilla nigriceps ), plains gartersnake ( Thamnophis radix ), and lined snake ( Tropidoclonion lineatum ). Reptile diversity increases significantly in southern regions of

5076-629: The Great Plains and that included trade networks west to the Rocky Mountains. Mississippians settled the Great Plains at sites now in Oklahoma and South Dakota . Siouan language speakers may have originated in the lower Mississippi River region. They were agriculturalists and may have been part of the Mound Builder civilization during the 9th–12th centuries. Pressure from other Indian tribes, themselves driven west and south by

5184-588: The Great Plains include National Parks and National Monuments, administers by the National Park Service with the responsibility of preserving ecological and historical places and making them available to the public. The U.S. Fish & Wildlife Service manages the National Wildlife Refuges, with the primary responsibility of conserving and protecting fish, wildlife, plants, and habitat in the public trust. Both are agencies of

5292-476: The Great Plains include the swift fox ( Vulpes velox ) and the endangered black-footed ferret ( Mustela nigripes ). The lesser prairie chicken ( Tympanuchus pallidicinctus ) is endemic to the Great Plains and the distribution of the greater prairie chicken ( Tympanuchus cupido ) predominantly occurs in the region, although the latter historically ranged further eastward. The Harris's sparrow ( Zonotrichia querula ) spends winter months in southern areas of

5400-512: The Great Plains is the most tornado active area in the world and is sometimes referred to as Tornado Alley . The Great Plains are part of the floristic North American Prairies province , which extends from the Rocky Mountains to the Appalachians . Although the American bison ( Bison bison ) historically ranged throughout much of North America (from New York to Oregon and Canada to northern Mexico), they are strongly associated with

5508-751: The Great Plains where they once roamed in immense herds. Pronghorn ( Antilocapra americana ) range into western areas of the region. The black-tailed prairie dog ( Cynomys ludovicianus ) is another iconic species among several rodents that are linked to the region including the thirteen-lined ground squirrel ( Ictidomys tridecemlineatus ), spotted ground squirrel ( Xerospermophilus spilosoma ), Franklin's ground squirrel ( Poliocitellus franklinii ), plains pocket gopher ( Geomys bursarius ), hispid pocket mouse ( Chaetodipus hispidus ), olive-backed pocket mouse ( Perognathus fasciatus ), plains pocket mouse ( Perognathus flavescens ), and plains harvest mouse ( Reithrodontomys montanus ), Two carnivores associated with

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5616-488: The Great Plains. The ornate box turtle ( Terrapene ornata ) and great plains skink ( Plestiodon obsoletus ) occur in southern areas. Although few salamanders are strongly associated with region, the western tiger salamander ( Ambystoma mavortium ) ranges through much of the Great Plains and the Rocky Mountains, as does the Rocky Mountain toad ( Anaxyrus w. woodhousi ). Other anurans related to region include

5724-503: The High Plains) is periodically subjected to extended periods of drought ; high winds in the region may then generate devastating dust storms . The eastern Great Plains near the eastern boundary falls in the humid subtropical climate zone in the southern areas, and the northern and central areas fall in the humid continental climate . Many thunderstorms occur in the plains in the spring through summer. The southeastern portion of

5832-656: The Italian Associazione Italiana Cani della Prateria , remain against import from the United States, due to the high death rate of wild captures. Several zoos in Europe have stable prairie dog colonies that generate enough surplus pups to saturate the EU internal demand, and several associations help owners to give adoption to captive-born animals. Prairie dogs in captivity may live up to 10 years. In companies that use large numbers of cubicles in

5940-488: The Mexican, American, and Canadian governments, uses the "Great Plains" as an ecoregion synonymous with predominant prairies and grasslands rather than as physiographic region defined by topography. The Great Plains ecoregion includes five sub-regions: Temperate Prairies, West-Central Semi-Arid Prairies, South-Central Semi-Arid Prairies, Texas Louisiana Coastal Plains, and Tamaulipas-Texas Semi-Arid Plain, which overlap or expand upon other Great Plains designations. The region

6048-650: The Red, Brazos, and Colorado rivers of Texas and presents a ragged escarpment approximately 500 to 800 ft (150 to 240 m) high, overlooking the central denuded area of that state. There, between the Brazos and Colorado rivers, occurs a series of isolated outliers capped by limestone that underlies both the Llano Uplift on the west and the Grand Prairies escarpment on the east. The southern and narrow part of

6156-877: The Santa Fe Trail. The Turkey Trail is 10.5 miles (16.9 km) long and runs through the wooded area along the Cimarron River. The Cimarron Recreation area offers tent and trailer camping, picnicking, a group site, and access to the Turkey Trail. Several fishing ponds, including four at the Cimarron Recreation Area, are stocked with rainbow trout in the winter and channel catfish in the summer. Other sport fish include crappie , sunfish , and largemouth bass . Animals hunted include whitetail deer , pronghorn , quail , pheasant , prairie dog and jack rabbit . A car tour of approximately 30 miles (48 km) on mostly dirt roads leads to most of

6264-535: The United States, they range primarily to the west of the Mississippi River , though they have also been introduced in a few eastern locales. They are also found in the Canadian Prairies . Despite the name, they are not actually canines ; prairie dogs, along with the marmots , chipmunks , and several other basal genera belong to the ground squirrels ( tribe Marmotini ), part of the larger squirrel family ( Sciuridae ). Prairie dogs are considered

6372-403: The air while making a call. A jump-yip from one prairie dog causes others nearby to do the same. Ecologists consider the prairie dog to be a keystone species . They are an important prey species, being the primary diet in prairie species such as the black-footed ferret , swift fox , golden eagle , red tailed hawk , American badger , coyote , and ferruginous hawk . Other species, such as

6480-721: The alternate route called the Cimarron cut-off which passed through the National Grassland. Middle Spring was one of the three reliable sources of good water along more than 150 miles (240 km) of the Cimarron Cutoff trail. In or near the Grassland, mountain man Jedediah Smith was killed by Comanches in 1831. In 1879, the Beaty Brothers established Point of Rocks Ranch, the first in the area. Wheat farmers soon moved in and prospered in wet years, but

6588-716: The area of the ancient Great Plains for thousands to millions of years. The vast majority of these animals became extinct in North America at the end of the Pleistocene (around 13,000 years ago). A number of significant fossil sites are located in the Great Plains including Agate Fossil Beds National Monument ( Nebraska ), Ashfall Fossil Beds ( Nebraska ), Clayton Lake State Park ( New Mexico ), Dinosaur Valley State Park ( Texas ), Hudson-Meng Bison Kill (Nebraska), Makoshika State Park (Montana), and The Mammoth Site ( South Dakota ). Public and protected lands in

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6696-427: The burrow at night. The licking of genitals may protect against sexually transmitted diseases and genital infections, while dust-bathing may protect against fleas and other parasites. Prairie dogs also have a mating call which consists of up to 25 barks with a 3- to 15-second pause between each one. Females may try to increase their reproduction success by mating with males outside their family groups. When copulation

6804-499: The burrow from flooding and a listening post for predators. When hiding from predators, prairie dogs use less-deep chambers that are usually 1 m (3 ft 3 in) below the surface. Nursery chambers tend to be deeper, being 2 to 3 m (6 ft 7 in to 9 ft 10 in) below the surface. Prairie dogs are highly social animals. They live in large colonies or "towns", and collections of prairie dog families can span hundreds of acres. The prairie dog family groups are

6912-404: The burrows from flooding. The holes also possibly provide ventilation as the air enters through the dome crater and leaves through the rim crater, causing a breeze though the burrow. Prairie dog burrows contain chambers to provide certain functions. They have nursery chambers for their young, chambers for night, and chambers for the winter. They also contain air chambers that may function to protect

7020-443: The caller may be trying to make itself more noticeable to the predator. Predators, though, seem to have difficulty determining which prairie dog is making the call due to its " ventriloquistic " nature. Perhaps the most striking of prairie dog communications is the territorial call or "jump-yip" display of the black-tailed prairie dog. A black-tailed prairie dog stretches the length of its body vertically and throws its forefeet into

7128-471: The central section, it is for the most part a dissected fluviatile plain. However, the lower lands which surround it on all sides place it in such strong relief that it stands up as a table-land, known from the time of Mexican occupation as the Llano Estacado . It measures roughly 150 mi (240 km) east-west and 400 mi (640 km) north-south. It is of very irregular outline, narrowing to

7236-499: The drought of the 1930s caused the Dust Bowl . Morton County, Kansas , was the most devastated county in the nation. The Federal government bought land from bankrupt farmers, restored the original prairie, and in 1960 the Cimarron National Grassland was created. The grassland is dedicated to "water conservation, wildlife management, recreation, cattle grazing, and mineral production." Cattle are grazed and oil and gas wells are found on

7344-531: The encroachment of European settlers as well as economic incentives such as the fur trade, alongside the arrival of the horse and firearms from Europe pushed multiple tribes onto the Great Plains. Among those to have lived on the Great Plains were the Blackfoot , Crow , Sioux , Cheyenne , Arapaho , Comanche , and others. Eastern portions of the Great Plains were inhabited by tribes who lived at Etzanoa and in semi-permanent villages of earth lodges, such as

7452-441: The entrances are simply flat holes in the ground, while at other times, they are surrounded by mounds of soil either left as piles or hard-packed. Some mounds, known as dome craters, can be as high as 20–30 cm (7.9–11.8 in). Other mounds, known as rim craters, can be as high as 1 m (3 ft 3 in). Dome craters and rim craters serve as observation posts used by the animals to watch for predators. They also protect

7560-632: The fall, they eat broadleaf forbs . In the winter, lactating and pregnant females supplement their diets with snow for extra water. They also will eat roots, seeds, fruit, buds, and grasses of various species. Black-tailed prairie dogs in South Dakota eat western bluegrass, blue grama , buffalo grass , six weeks fescue , and tumblegrass , while Gunnison's prairie dogs eat rabbit brush , tumbleweeds , dandelions , saltbush , and cacti in addition to buffalo grass and blue grama. White-tailed prairie dogs have been observed to kill ground squirrels,

7668-433: The general level by 500 ft (150 m) or more and manifestly demonstrating the widespread erosion of the surrounding plains. All these reliefs are more plentiful towards the mountains in central Montana. The peneplain is no longer in the cycle of erosion that witnessed its production. It appears to have suffered a regional uplift or increase in elevation, for the upper Missouri River and its branches no longer flow on

7776-760: The great plains like the Rocky Mountain Locust (Melanoplus spretus). During the Cretaceous Period (145–66 million years ago), the Great Plains were covered by a shallow inland sea called the Western Interior Seaway . However, during the Late Cretaceous to the Paleocene (65–55 million years ago), the seaway had begun to recede, leaving behind thick marine deposits and a relatively flat terrain which

7884-594: The herd. Great Plains The Great Plains are a broad expanse of flatland in North America . The region is located just to the east of the Rocky Mountains , much of it covered in prairie , steppe , and grassland . They are the western part of the Interior Plains , which include the mixed grass prairie , the tallgrass prairie between the Great Lakes and Appalachian Plateau , and

7992-432: The immediate area around their burrows of most vegetation. As a result, prairie dog habitat has been affected by direct removal by farmers, as well as the more obvious encroachment of urban development, which has greatly reduced their populations. The removal of prairie dogs "causes undesirable spread of brush", the costs of which to livestock range may outweigh the benefits of removal. Black-tailed prairie dogs comprise

8100-595: The interior of North America. It also has currency as a region of human geography , referring to the Plains Indians or the Plains states . In Canada the term is rarely used; Natural Resources Canada , the government department responsible for official mapping, treats the Interior Plains as one unit consisting of several related plateaus and plains. There is no region referred to as the "Great Plains" in

8208-501: The largest group. They rise like a large island from the sea, occupying an oval area of about 100 mi (160 km) north-south by 50 mi (80 km) east-west. At Black Elk Peak , they reach an altitude of 7,216 ft (2,199 m) and have an effective relief over the plains of 2,000 or 3,000 ft (610 or 910 m) This mountain mass is of flat-arched, dome-like structure, now well dissected by radiating consequent streams. The weaker uppermost strata have been eroded down to

8316-484: The largest remaining community. In spite of human encroachment, prairie dogs have adapted, continuing to dig burrows in open areas of western cities. One common concern, which led to the widespread extermination of prairie dog colonies, was that their digging activities could injure horses by fracturing their limbs. According to writer Fred Durso, Jr., of E Magazine , though, "after years of asking ranchers this question, we have found not one example." Another concern

8424-468: The least protected biomes. Humans have converted much of the prairies for agricultural purposes or to create pastures. Several of the protected lands in the region are centered around aberrant and uncharacteristic features of the region, such as mountains, outcrops, and canyons (e.g. Devil's Tower National Monument , Wind Cave National Park , Scotts Bluff National Monument ), and as splendid and worthy as they are, they are not primarily focused on conserving

8532-426: The level of the plains where their upturned edges are evenly truncated. The next following harder strata have been sufficiently eroded to disclose the core of underlying igneous and metamorphic crystalline rocks in about half of the domed area. In the intermediate section of the plains, between latitudes 44° and 42° , including southern South Dakota and northern Nebraska , the erosion of certain large districts

8640-484: The line that divides the Great Plains into an area that receives 20 in (510 mm) or more of rainfall per year and an area that receives less than 20 in (510 mm). In this context, the High Plains, as well as Southern Alberta , south-western Saskatchewan and Eastern Montana are mainly semi arid steppe land and are generally characterised by rangeland or marginal farmland . The region (especially

8748-508: The majority contain males that have largely antagonistic relationships. In the former, the males tend to be related, while in the latter, they tend not to be related. Two or three groups of females may be controlled by one male. However, among these female groups, no friendly relationships exist. The typical prairie dog territory takes up 0.05–1.01 hectares (0.12–2.50 acres). Territories have well-established borders that coincide with physical barriers such as rocks and trees. The resident male of

8856-760: The more common "prairie". The Great Plains are the westernmost portion of the vast North American Interior Plains , which extend east to the Appalachian Plateau . The United States Geological Survey divides the Great Plains in the United States into ten physiographic subdivisions: Further to this can be added Canadian physiographic sub-regions such as the Alberta Plain, Cypress Hills , Manitoba Escarpment (eastward), Manitoba Plain, Missouri Coteau (shared), Rocky Mountain Foothills (eastward), and Saskatchewan Plain. The Great Plains consist of

8964-487: The more obvious encroachment of urban development, which has greatly reduced their populations. The removal of prairie dogs "causes undesirable spread of brush", the costs of which to livestock range and soil quality often outweighs the benefits of removal. Other threats include disease . The prairie dog is protected in many areas to maintain local populations and ensure natural ecosystems . Prairie dogs are named for their habitat and warning call, which sounds similar to

9072-613: The most basic units of its society. Members of a family group inhabit the same territory. Family groups of black-tailed and Mexican prairie dogs are called "coteries", while "clans" describes family groups of white-tailed, Gunnison's, and Utah prairie dogs. Although these two family groups are similar, coteries tend to be more closely knit than clans. Members of a family group interact through oral contact or "kissing" and grooming one another. They do not perform these behaviors with prairie dogs from other family groups. A prairie dog town may contain 15–26 family groups, with subgroups within

9180-442: The mountains, the local relief is generally small. The semi-arid climate excludes tree growth and opens far-reaching views. The plains are by no means a simple unit. They are of diverse structure and of various stages of erosional development. They are occasionally interrupted by buttes and escarpments . They are frequently broken by valleys. Yet on the whole, a broadly extended surface of moderate relief so often prevails that

9288-436: The name, Great Plains, for the region as a whole is well-deserved. The western boundary of the plains is usually well-defined by the abrupt ascent of the mountains. The eastern boundary of the plains (in the United States) is more climatic than topographic . The line of 20 in (510 mm) of annual rainfall trends a little east of northward near the 97th meridian. If a boundary must be drawn where nature presents only

9396-434: The plains and prairies. United States: Canada: the Great Plains biome is found to be at the brink of collapse due to woody plant encroachment , with 62% of Northern American grassland lost to date. The first Peoples ( Paleo-Indians ) arrived on the Great Plains thousands of years ago. The introduction of corn around 800 CE allowed the development of the mound-building Mississippian culture along rivers that crossed

9504-427: The points of interest on the Grassland, including a prairie dog town, Point of Rocks, and the Santa Fe Trail. The Cimarron Grassland has a population of rare lesser prairie chickens and has two viewing areas. The males perform their courting rituals from mid-March until early June. Elk were reintroduced into the Grassland in 1981 and a herd of 50 is maintained. Hunting by special permit is sometimes allowed to thin

9612-428: The prairie dogs move to the entrance of a burrow and stand outside the entrance, observing the coyote, while those prairie dogs that were inside the burrows come out to stand and watch, as well. For domestic dogs, the response is to observe, standing in place where they were when the alarm was sounded, again with the underground prairie dogs emerging to watch. Debate exists over whether the alarm calling of prairie dogs

9720-415: The predator is, how big it is and how fast it is approaching. These have been described as a form of grammar. According to Slobodchikoff, these calls, with their individuality in response to a specific predator, imply that prairie dogs have highly developed cognitive abilities. He also writes that prairie dogs have calls for things that are not predators to them. This is cited as evidence that the animals have

9828-647: The region. Other species migrate from the south in the spring and spend their breeding season on the plains, including the white-faced ibis ( Plegadis chihi ), mountain plover ( Charadrius montanus ), marbled godwit ( Limosa fedoa ), Sprague's pipit ( Anthus spragueii ), Cassin's sparrow ( Peucaea cassinii ), Baird's sparrow ( Centronyx bairdii ), lark bunting ( Calamospiza melanocorys ), chestnut-collared longspur ( Calcarius ornatus ), thick-billed longspur or McCown's longspur ( Rhynchophanes mccownii ), and dickcissel ( Spiza americana ). The prairie rattlesnake ( Crotalus viridis ) ranges throughout much of

9936-474: The river from a better graded preglacial valley by the Pleistocene ice sheet . Here, the ice sheet overspread the plains from the moderately elevated Canadian highlands far on the north-east, instead of from the much higher mountains nearby on the west. The present altitude of the plains near the mountain base is 4,000 ft (1,200 m). The northern plains are interrupted by several small mountain areas. The Black Hills, chiefly in western South Dakota, are

10044-565: The seaway had once occupied. During the Cenozoic era , specifically about 25 million years ago during the Miocene and Pliocene epochs, the continental climate became favorable to the evolution of grasslands. Existing forest biomes declined and grasslands became much more widespread. The grasslands provided a new niche for mammals, including many ungulates and glires , that switched from browsing diets to grazing diets. Traditionally,

10152-428: The short tail, and weigh between 0.5 and 1.5 kilograms (1 and 3 lb). Sexual dimorphism in body mass in the prairie dog varies 105 to 136% between the sexes. Among the species, black-tailed prairie dogs tend to be the least sexually dimorphic, and white-tailed prairie dogs tend to be the most sexually dimorphic. Sexual dimorphism peaks during weaning, when the females lose weight and the males start eating more, and

10260-405: The south. Its altitude is 5,500 ft (1,700 m) at the highest western point, nearest the mountains whence its gravels were supplied. From there, it slopes southeastward at a decreasing rate, first about 12 ft (3.7 m), then about 7 ft/mi (1.3 m/km), to its eastern and southern borders, where it is 2,000 ft (610 m) in altitude. Like the High Plains farther north, it

10368-459: The southern section owes its smoothness to the deposition of imported gravels and sands upon a previously uneven surface by the action of aggrading rivers and their outgoing distributaries. The two sections are also alike in that residual eminences still here and there surmount the peneplain of the northern section, while the fluviatile plain of the central section completely buried the pre-existent relief. An exception to this statement must be made for

10476-416: The southwest, close to the mountains in southern Colorado, where some lava-capped mesas ( Mesa de Maya , Raton Mesa ) stand several thousand feet above the general plain level, and thus testify to the widespread erosion of this region before it was aggraded. The southern section of the Great Plains, between latitudes 35.5° and 25.5°, lies in western Texas , eastern New Mexico , and western Oklahoma . Like

10584-588: The spread of grasslands and the development of grazers have been strongly linked. However, an examination of mammalian teeth suggests that it is the open, gritty habitat and not the grass itself which is linked to diet changes in mammals, giving rise to the " grit, not grass " hypothesis. Paleontological finds in the area have yielded bones of mammoths , saber-toothed cats and other ancient animals, as well as dozens of other megafauna (large animals over 100 lb [45 kg]) – such as giant sloths , horses , mastodons , and American lion – that dominated

10692-602: The subdued forms of the Wichita Mountains in Oklahoma , the westernmost member of the Ouachita system. The term "Western Plains" is used to describe the ecoregion of the Great Plains, or alternatively the western portion of the Great Plains. In general, the Great Plains have a wide range of weather, with very cold and harsh winters and very hot and humid summers. Wind speeds are often very high, especially in winter. The 100th meridian roughly corresponds with

10800-464: The surface of the plain, but in well graded, maturely opened valleys, several hundred feet below the general level. A significant exception to the rule of mature valleys occurs, however, in the case of the Missouri, the largest river, which is broken by several falls on hard sandstones about 50 mi (80 km) east of the mountains. This peculiar feature is explained as the result of displacement of

10908-590: The table-land, called the Edwards Plateau , is more dissected than the rest, and falls off to the south in a frayed-out fault scarp. This scarp overlooks the coastal plain of the Rio Grande embayment . The central denuded area, east of the Llano, resembles the east-central section of the plains in exposing older rocks. Between these two similar areas, in the space limited by the Canadian and Red Rivers, rise

11016-771: The valley of the Cimarron. Vegetation is mostly shortgrass prairie grassland, dominated by sand sagebrush in salty soils. Groves of cottonwood and other trees are found near the river. The climate of the National Grassland is semi-arid, receiving about 18 inches (460 mm) of precipitation annually, mostly in summer. High winds are common and further desiccate the soil. Summer temperatures are hot, with an average high of 93 °F (34 °C) and an average low of 64 °F (18 °C) in July. Winters are cold with an average high of 45 °F (7 °C) and an average low of 18 °F (−8 °C) in January. The all-time high temperature

11124-506: The victimized mother may help raise the young of other females. The prairie dog is well adapted to predators . Using its dichromatic color vision, it can detect predators from a great distance; it then alerts other prairie dogs of the danger with a special, high-pitched call. Constantine Slobodchikoff and others assert that prairie dogs use a sophisticated system of vocal communication to describe specific predators. According to them, prairie dog calls contain specific information as to what

11232-545: The winter and 15–25 °C (59–77 °F) in the summer. Prairie dog tunnel systems channel rainwater into the water table , which prevents runoff and erosion , and can also change the composition of the soil in a region by reversing soil compaction that can result from cattle grazing. Prairie dog burrows are 5–10 m (16–33 ft) long and 2–3 m (6.6–9.8 ft) below the ground. The entrance holes are generally 10–30 cm (3.9–11.8 in) in diameter. Prairie dog burrows can have up to six entrances. Sometimes,

11340-525: The young, the mother also defends the nursery chamber and collects grass for the nest. Males play their part by defending the territories and maintaining the burrows. The young spend their first six weeks below the ground being nursed. They are then weaned and begin to surface from the burrow. By five months, they are fully grown. The subject of cooperative breeding in prairie dogs has been debated among biologists. Some argue prairie dogs will defend and feed young that are not theirs, and young seemingly sleep in

11448-488: Was an important landmark for travelers heading west on the Cimarron Cutoff, and for modern day ranchers, because many springs exist in the area. Point of Rocks has an elevation of 3,540 feet (1,080 m). The present-day Cimarron National Grassland was the territory of the Comanche and other Indian tribes allied to them. In 1822, William Becknell was the first to traverse the Santa Fe Trail by wagon, pioneering

11556-577: Was not generally used before the early 20th century. Nevin Fenneman's 1916 study Physiographic Subdivision of the United States brought the term Great Plains into more widespread usage. Before that the region was almost invariably called the High Plains, in contrast to the lower Prairie Plains of the Midwestern states . Today the term " High Plains " is used for a subregion of the Great Plains. The term still remains little-used in Canada compared to

11664-509: Was recorded by Lt. Zebulon Pike while on the Arkansas two years after Lewis and Clark's expedition. In Lakota , the word is pispíza or pìspíza . The black-tailed prairie dog ( Cynomys ludovicianus ) was first described by Lewis and Clark in 1804. Lewis described it in more detail in 1806, calling it the "barking squirrel". Prairie dogs are stout-bodied rodents that, on average, are 30 to 40 cm (12 to 16 in) long, including

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