Granite ( / ˈ ɡ r æ n ɪ t / GRAN -it ) is a coarse-grained ( phaneritic ) intrusive igneous rock composed mostly of quartz , alkali feldspar , and plagioclase . It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions . These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers.
123-584: Enchanted Rock is a pink granite mountain located in the Llano Uplift about 17 miles (27 km) north of Fredericksburg, Texas and 24 miles (39 km) south of Llano, Texas , United States. Enchanted Rock State Natural Area , which includes Enchanted Rock and surrounding land, spans the border between Gillespie and Llano counties, south of the Llano River . Enchanted Rock covers roughly 640 acres (260 ha) and rises around 425 feet (130 m) above
246-420: A completely crystalline rock. Granitic rocks mainly consist of feldspar , quartz , mica , and amphibole minerals , which form an interlocking, somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende ) peppering the lighter color minerals. Occasionally some individual crystals ( phenocrysts ) are larger than the groundmass , in which case
369-553: A basaltic magma to a granitic magma, but the quantities produced are small. For example, granitic rock makes up just 4% of the exposures in the South Sandwich Islands . In continental arc settings, granitic rocks are the most common plutonic rocks, and batholiths composed of these rock types extend the entire length of the arc. There are no indication of magma chambers where basaltic magmas differentiate into granites, or of cumulates produced by mafic crystals settling out of
492-416: A beard, usually shorter and thinner than that of the male. Females have feathers that are duller overall, in shades of brown and gray. Parasites can dull the coloration of both sexes; in males, vivid coloration may serve as a signal of health. The primary wing feathers have white bars. Turkeys have approximately 5,000 to 6,000 feathers. Juvenile males are called jakes; the difference between jakes and toms
615-413: A clear shot to hunters. The feathers of turkeys also often made their way into the rituals and headgear of many tribes. Many leaders, such as Catawba chiefs, traditionally wore turkey feather headdresses. Significant peoples of several tribes, including Muscogee Creek and Wampanoag , wore turkey feather cloaks. The turkey clan is one of the three Lenape clans. Movements of wild turkeys inspired
738-542: A combination of lack of winter feed and poaching. Small populations, probably descended from farm as well as wild stock, in the Czech Republic and Germany have been more successful, and there are wild populations of some size following introductions in Hawaii and New Zealand . There are subtle differences in the coloration, habitat, and behavior of the different subspecies of wild turkeys. The six subspecies are: This
861-407: A coppery sheen that becomes more complex in older males. Mature males have a large, featherless, reddish head and red throat, with red wattles on the throat and neck. The head has fleshy, unique growths called caruncles , which may be used to identify certain birds from one another. When toms are excited, a fleshy flap on the bill (called a snood ) expands, and this, the wattles and the bare skin of
984-520: A diapir it would expend far too much energy in heating wall rocks, thus cooling and solidifying before reaching higher levels within the crust. Fracture propagation is the mechanism preferred by many geologists as it largely eliminates the major problems of moving a huge mass of magma through cold brittle crust. Magma rises instead in small channels along self-propagating dykes which form along new or pre-existing fracture or fault systems and networks of active shear zones. As these narrow conduits open,
1107-509: A few (known as leucogranites ) contain almost no dark minerals. Granite is nearly always massive (lacking any internal structures), hard (falling between 6 and 7 on the Mohs hardness scale) , and tough. These properties have made granite a widespread construction stone throughout human history. The word "granite" comes from the Latin granum , a grain, in reference to the coarse-grained structure of such
1230-610: A granite that is derived from partial melting of metasedimentary rocks may have more alkali feldspar, whereas a granite derived from partial melting of metaigneous rocks may be richer in plagioclase. It is on this basis that the modern "alphabet" classification schemes are based. The letter-based Chappell & White classification system was proposed initially to divide granites into I-type (igneous source) granite and S-type (sedimentary sources). Both types are produced by partial melting of crustal rocks, either metaigneous rocks or metasedimentary rocks. I-type granites are characterized by
1353-565: A high content of sodium and calcium, and by a strontium isotope ratio, Sr/ Sr, of less than 0.708. Sr is produced by radioactive decay of Rb, and since rubidium is concentrated in the crust relative to the mantle, a low ratio suggests origin in the mantle. The elevated sodium and calcium favor crystallization of hornblende rather than biotite. I-type granites are known for their porphyry copper deposits. I-type granites are orogenic (associated with mountain building) and usually metaluminous. S-type granites are sodium-poor and aluminum-rich. As
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#17328593401841476-621: A larger close relative already occupying the forests of Massachusetts. It is one of the smallest subspecies and is best known in Spanish from its Aztec-derived name, guajolote . This wild turkey subspecies is thought to be critically endangered, as of 2010. The idea that Benjamin Franklin preferred the turkey as the national bird of the United States comes from a letter he wrote to his daughter Sarah Bache on 26 January 1784. The main subject of
1599-550: A minimum by not disturbing plants, animals, or artifacts. Pets are not allowed on the summit trail. Federal and state statutes, regulations, and rules governing archeological and historic sites apply. The state Game Warden as a commissioned peace officer is authorized to inspect natural resources and take any necessary action for their preservation. Wildlife at Enchanted Rock includes white-tailed deer , ringtail , nine-banded armadillo , rock and fox squirrel , rabbit , and red harvester ants . A wide variety of lizards, including
1722-820: A much higher proportion of clay with the Cecil soil series a prime example of the consequent Ultisol great soil group. Granite is a natural source of radiation , like most natural stones. Potassium-40 is a radioactive isotope of weak emission, and a constituent of alkali feldspar , which in turn is a common component of granitic rocks, more abundant in alkali feldspar granite and syenites . Some granites contain around 10 to 20 parts per million (ppm) of uranium . By contrast, more mafic rocks, such as tonalite, gabbro and diorite , have 1 to 5 ppm uranium, and limestones and sedimentary rocks usually have equally low amounts. Many large granite plutons are sources for palaeochannel -hosted or roll front uranium ore deposits , where
1845-536: A peculiar mineralogy and geochemistry, with particularly high silicon and potassium at the expense of calcium and magnesium and a high content of high field strength cations (cations with a small radius and high electrical charge, such as zirconium , niobium , tantalum , and rare earth elements .) They are not orogenic, forming instead over hot spots and continental rifting, and are metaluminous to mildly peralkaline and iron-rich. These granites are produced by partial melting of refractory lithology such as granulites in
1968-568: A range of hills, formed by the metamorphic aureole or hornfels . Granite often occurs as relatively small, less than 100 km stock masses ( stocks ) and in batholiths that are often associated with orogenic mountain ranges. Small dikes of granitic composition called aplites are often associated with the margins of granitic intrusions . In some locations, very coarse-grained pegmatite masses occur with granite. Granite forms from silica-rich ( felsic ) magmas. Felsic magmas are thought to form by addition of heat or water vapor to rock of
2091-416: A respectful amount of space and keeping outdoor spaces clean and undisturbed. Also, turkeys that are habituated to seeing people, at places like parks or campgrounds, can be tame and will even feed from the hands of people. Male toms occasionally will attack parked cars and reflective surfaces, thinking they see another turkey and must defend their territory. The Californian turkey ( Meleagris californica )
2214-415: A result, they contain micas such as biotite and muscovite instead of hornblende. Their strontium isotope ratio is typically greater than 0.708, suggesting a crustal origin. They also commonly contain xenoliths of metamorphosed sedimentary rock, and host tin ores. Their magmas are water-rich, and they readily solidify as the water outgasses from the magma at lower pressure, so they less commonly make it to
2337-538: A segmented ridge, the surface expression of a large igneous batholith , called the Town Mountain Granite, of middle Precambrian ( 1,082 ± 6 million years ago ) material that intruded into earlier metamorphic schist , called the Packsaddle Schist. The intrusive granite of the rock mass, or pluton , was exposed by extensive erosion of the surrounding sedimentary rock , primarily
2460-701: A variety of interspersion of tree species appear to be preferred. In the Northeast of North America, turkeys are most profuse in hardwood timber of oak - hickory ( Quercus - Carya ) and forests of red oak ( Quercus rubra ), beech ( Fagus grandifolia ), cherry ( Prunus serotina ) and white ash ( Fraxinus americana ). Best ranges for turkeys in the Coastal Plain and Piedmont sections have an interspersion of clearings, farms, and plantations with preferred habitat along principal rivers and in cypress ( Taxodium distichum ) and tupelo ( Nyssa sylvatica ) swamps. In
2583-405: A year old and, occasionally to a lesser extent, males younger than a year old gobble to announce their presence to females and competing males. The gobble of a wild turkey can be heard up to a mile away. Males also emit a low-pitched "drumming" sound, produced by the movement of air in the air sac in the chest, similar to the booming of a prairie chicken . In addition they produce a sound known as
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#17328593401842706-466: Is grus , which is often made up of coarse-grained fragments of disintegrated granite. Climatic variations also influence the weathering rate of granites. For about two thousand years, the relief engravings on Cleopatra's Needle obelisk had survived the arid conditions of its origin before its transfer to London. Within two hundred years, the red granite has drastically deteriorated in the damp and polluted air there. Soil development on granite reflects
2829-539: Is microgranite . The extrusive igneous rock equivalent of granite is rhyolite . Granitic rock is widely distributed throughout the continental crust . Much of it was intruded during the Precambrian age; it is the most abundant basement rock that underlies the relatively thin sedimentary veneer of the continents. Outcrops of granite tend to form tors , domes or bornhardts , and rounded massifs . Granites sometimes occur in circular depressions surrounded by
2952-517: Is 3–6·10 Pa·s. The melting temperature of dry granite at ambient pressure is 1215–1260 °C (2219–2300 °F); it is strongly reduced in the presence of water, down to 650 °C at a few hundred megapascals of pressure. Granite has poor primary permeability overall, but strong secondary permeability through cracks and fractures if they are present. A worldwide average of the chemical composition of granite, by weight percent, based on 2485 analyses: The medium-grained equivalent of granite
3075-468: Is abundant. Osceola turkeys are the smallest subspecies weighing 16 to 18 pounds (7 to 8 kg). The Rio Grande wild turkey ranges through Texas to Oklahoma , Kansas , New Mexico , Colorado , Oregon , Utah , and was introduced to central and western California , as well as parts of a few northeastern states. It was also introduced to Hawaiʻi in the late 1950s. Population estimates for this subspecies are around 1,000,000. This subspecies, native to
3198-473: Is also larger in males compared to females. In contrast to the majority of other birds, they are colonized by bacteria of unknown function ( Corynebacterium uropygiale ). Males typically have at least one "beard", a tuft of coarse hair-like filaments (mesofiloplumes), growing from the center of the breast. Beards grow continuously during the turkey's lifespan and a one-year-old male has a beard up to 5 in (13 cm) long. Approximately 10% of females have
3321-414: Is among the heaviest flying birds in the world. The wings are relatively small, as is typical of the galliform order, and the wingspan ranges from 1.25 to 1.44 m (4 ft 1 in to 4 ft 9 in). The wing chord is only 20 to 21.4 cm (7.9 to 8.4 in). The bill is also relatively small, as adults measure 2 to 3.2 cm (0.79 to 1.26 in) in culmen length. The tarsus of
3444-410: Is an excess of aluminum beyond what can be taken up in feldspars (Al 2 O 3 > CaO + K 2 O + Na 2 O) are described as peraluminous , and they contain aluminum-rich minerals such as muscovite . The average density of granite is between 2.65 and 2.75 g/cm (165 and 172 lb/cu ft), its compressive strength usually lies above 200 MPa (29,000 psi), and its viscosity near STP
3567-515: Is an extinct species of turkey indigenous to the Pleistocene and early Holocene of California . It became extinct about 10,000 years ago. The present Californian wild turkey population derives from wild birds re-introduced during the 1960s and 1970s from other areas by game officials. They proliferated after 2000 to become an everyday sight in the East Bay Area by 2015. At the beginning of
3690-618: Is believed to have a mass of around 81 tonnes. It was the tallest temple in south India. Imperial Roman granite was quarried mainly in Egypt, and also in Turkey, and on the islands of Elba and Giglio . Granite became "an integral part of the Roman language of monumental architecture". The quarrying ceased around the third century AD. Beginning in Late Antiquity the granite was reused, which since at least
3813-434: Is called a binary or two-mica granite. Two-mica granites are typically high in potassium and low in plagioclase, and are usually S-type granites or A-type granites, as described below . Another aspect of granite classification is the ratios of metals that potentially form feldspars. Most granites have a composition such that almost all their aluminum and alkali metals (sodium and potassium) are combined as feldspar. This
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3936-816: Is greatest in the first 14 days of life, especially of those roosting on the ground, decreasing most notably after half a year, when they attain near adult sizes. In addition to poults, hens and adult-sized fledglings (but not, as far as is known, adult male toms) are vulnerable to predation by great horned owls ( Bubo virginianus ), American goshawk ( Accipiter atricapillus ), domestic dogs ( Canis familiaris ), domestic cats ( Felis catus ), and red foxes ( Vulpes vulpes ). Predators of both adults and poults include coyotes ( Canis latrans ), gray wolves ( Canis lupus ), bobcats ( Lynx rufus ), cougars ( Puma concolor ), Canada lynx ( Lynx canadensis ) , golden eagles ( Aquila chrysaetos ), and possibly American black bears ( Ursus americanus ), which also will eat
4059-433: Is limited by the amount of thermal energy available, which must be replenished by crystallization of higher-melting minerals in the magma. Thus, the magma is melting crustal rock at its roof while simultaneously crystallizing at its base. This results in steady contamination with crustal material as the magma rises. This may not be evident in the major and minor element chemistry, since the minerals most likely to crystallize at
4182-481: Is most commonly referred to as strutting. Their heads and necks are colored with red, white, and blue. The color can change with the turkey's mood, with a solid white head and neck being the most excited. They use gobbling, drumming/booming, and spitting as signs of social dominance, and to attract females. Courtship begins during the months of March and April, which is when turkeys are still flocked together in winter areas. Males may be seen courting in groups, often with
4305-552: Is never in good Case but like those among Men who live by Sharping & Robbing he is generally poor and often very lousy. Besides he is a rank Coward: The little King Bird not bigger than a Sparrow attacks him boldly and drives him out of the District. He is therefore by no means a proper Emblem for the brave and honest Cincinnati of America who have driven all the King birds from our Country ... I am on this account not displeased that
4428-404: Is permeated by sheets and channels of light granitic rock (the leucosome ). The leucosome is interpreted as partial melt of a parent rock that has begun to separate from the remaining solid residue (the melanosome). If enough partial melt is produced, it will separate from the source rock, become more highly evolved through fractional crystallization during its ascent toward the surface, and become
4551-454: Is relieved when overlying material is removed by erosion or other processes. Chemical weathering of granite occurs when dilute carbonic acid , and other acids present in rain and soil waters, alter feldspar in a process called hydrolysis . As demonstrated in the following reaction, this causes potassium feldspar to form kaolinite , with potassium ions, bicarbonate, and silica in solution as byproducts. An end product of granite weathering
4674-411: Is some concern that some granite sold as countertops or building material may be hazardous to health. Dan Steck of St. Johns University has stated that approximately 5% of all granite is of concern, with the caveat that only a tiny percentage of the tens of thousands of granite slab types have been tested. Resources from national geological survey organizations are accessible online to assist in assessing
4797-413: Is that jakes have very short "beards" and tail fans with longer feathers in the middle. The tom's tail fan feathers are uniform in length. Despite usually being rather lighter than waterfowl, the turkey has the second-highest maximum average weight of any North American bird, after the trumpeter swan ( Cygnus buccinator ). By average mass, however, several other American birds surpass the mean weight of
4920-479: Is that magma will rise through the crust as a single mass through buoyancy . As it rises, it heats the wall rocks , causing them to behave as a power-law fluid and thus flow around the intrusion allowing it to pass without major heat loss. This is entirely feasible in the warm, ductile lower crust where rocks are easily deformed, but runs into problems in the upper crust which is far colder and more brittle. Rocks there do not deform so easily: for magma to rise as
5043-402: Is that the less-dominant male has a greater chance of passing along shared genetic material than if he were courting alone. When mating is finished, females search for nest sites. Nests are shallow dirt depressions engulfed with woody vegetation. Hens lay a clutch of 10–14 eggs, usually one per day. The eggs are incubated for at least 28 days. The poults are precocial and nidifugous , leaving
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5166-458: Is that when surprised with no time to flee, the poulets hide under the wings and body of the hen while she sits tight and still. Presumably, the hen has vocal and behavioural signals that trigger the poults to instinctively run to the hen for cover. Occasionally, if cornered, adult turkeys may try to fight off predators and large male toms can be especially aggressive in self-defense. When fighting off predators, turkeys may kick with their legs, using
5289-410: Is the case when K 2 O + Na 2 O + CaO > Al 2 O 3 > K 2 O + Na 2 O. Such granites are described as normal or metaluminous . Granites in which there is not enough aluminum to combine with all the alkali oxides as feldspar (Al 2 O 3 < K 2 O + Na 2 O) are described as peralkaline , and they contain unusual sodium amphiboles such as riebeckite . Granites in which there
5412-485: Is typical of a larger family of granitic rocks , or granitoids , that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification ), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though
5535-409: Is typically orthoclase or microcline and is often perthitic . The plagioclase is typically sodium-rich oligoclase . Phenocrysts are usually alkali feldspar. Granitic rocks are classified according to the QAPF diagram for coarse grained plutonic rocks and are named according to the percentage of quartz , alkali feldspar ( orthoclase , sanidine , or microcline ) and plagioclase feldspar on
5658-614: Is typically much smaller at 2.5–5.4 kg (5.5–11.9 lb) and is 76 to 95 cm (30 to 37 in) long. Per two large studies, the average weight of adult males is 7.6 kg (17 lb) and the average weight of adult females is 4.26 kg (9.4 lb). The record-sized adult male wild turkey, according to the National Wild Turkey Federation , weighed 16.85 kg (37.1 lb), with records of tom turkeys weighing over 13.8 kg (30 lb) uncommon but not rare. Considering its maximum and average weight, it
5781-428: Is uncommon, is classified simply as quartz-rich granitoid or, if composed almost entirely of quartz, as quartzolite . True granites are further classified by the percentage of their total feldspar that is alkali feldspar. Granites whose feldspar is 65% to 90% alkali feldspar are syenogranites , while the feldspar in monzogranite is 35% to 65% alkali feldspar. A granite containing both muscovite and biotite micas
5904-613: The Appalachian Plateau and Cumberland Plateau birds occupy mixed forest of oaks and pines on southern and western slopes, also hickory with diverse understories. Bald cypress and sweet gum ( Liquidambar styraciflua ) swamps of south Florida ; also hardwood of Cliftonia (a heath) and oak in north-central Florida. Lykes Fisheating Creek area of south Florida has up to 51% cypress, 12% hardwood hammocks, 17% glades of short grasses with isolated live oak ( Quercus virginiana ); nesting in neighboring prairies. Original habitat here
6027-462: The Appalachians , only as far north as central Pennsylvania. Early attempts used hand reared birds, a practice that failed miserably as the birds were unable to survive in the wild at all and many had imprinted far too much on humans to effectively survive. Game officials later made efforts to protect and encourage the breeding of the surviving wild population. They would wait for numbers to grow, catch
6150-560: The Cretaceous Edwards limestone that is exposed a few miles to the south. Park activities include hiking , picknicking , rock climbing , primitive backpacking , camping , and caving . The Summit Trail is the most popular hiking path. Texas Parks and Wildlife Department (TPWD) partners with Friends of Enchanted Rock, a volunteer-based nonprofit organization that works for the improvement and preservation of Enchanted Rock State Natural Area. Scheduled Summit Trail tours are on
6273-540: The Rocky Mountains and the neighboring prairies of Wyoming , Montana and South Dakota , as well as much of the high mesa country of New Mexico , Arizona , southern Utah and the Navajo Nation , with number from 334,460 to 344,460 birds. The subspecies has also been introduced into Oregon . The initial releases of Merriam's turkeys in 1961 resulted in establishing a remnant population of Merriam's turkeys along
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#17328593401846396-1009: The Texas horned lizard , also make the Enchanted Rock area their home. Vernal pools on the rock contain fragile invertebrate fairy shrimp . Designated a key bird watching site, bird enthusiasts can observe many species including wild turkey , greater roadrunner , golden-fronted woodpecker , Woodhouse's scrub jay , canyon towhee , rufous-crowned sparrow , black-throated sparrow , lesser goldfinch , common poorwill , chuck-will's-widow , black-chinned hummingbird , vermilion flycatcher , scissor-tailed flycatcher , Bell's vireo , yellow-throated vireo , blue grosbeak , painted bunting , orchard oriole , vesper sparrow , fox sparrow , Harris's sparrow , northern cardinal , canyon wren , and lark sparrow . More than 500 species of plants, from four chief plant communities — open oak woodland, mesquite grassland, floodplain , and granite rock community — inhabit
6519-410: The domestic turkey ( M. g. domesticus ). The Spaniards brought this tamed subspecies back to Europe with them in the mid-16th century; from Spain it spread to France and later Britain as a farmyard animal, usually becoming the centerpiece of a feast for the well-to-do. By 1620 it was common enough so that Pilgrim settlers of Massachusetts could bring turkeys with them from England , unaware that it had
6642-760: The "spit", which is a sharp expulsion of air from this air sac. Wild turkeys are omnivorous , foraging on the ground or climbing shrubs and small trees to feed. They prefer eating acorns , nuts , and other hard mast of various trees, including hazel , chestnut , hickory , and pinyon pine , as well as various seeds , berries such as juniper and bearberry , buds , leaves , fern fronds , roots, and insects . Turkeys also occasionally consume amphibians such as salamanders and small reptiles such as lizards and small snakes . Poults have been observed eating insects, berries, and seeds. Wild turkeys often feed in cow pastures , sometimes visit backyard bird feeders, and favor croplands after harvest to scavenge seeds on
6765-425: The 17th century. Habitat loss and market hunting were major factors in the decline of wild populations for the next two centuries. Game managers estimate that the entire population of wild turkeys in the United States was as low as 30,000 by the late 1930s. By the 1940s, it was almost totally extirpated from Canada and had become localized in pockets in the United States, in the north-east effectively restricted to
6888-502: The 20th century the range and numbers of wild turkeys had plummeted due to hunting and loss of habitat. When Europeans arrived in the New World, they were found from the southeastern US to Mexico. Turkeys were first domesticated by native peoples in Mexico and brought back to Europe during colonization. European settlers brought domesticated turkeys to the northern portions of North America during
7011-567: The A-Q-P half of the diagram. True granite (according to modern petrologic convention) contains between 20% and 60% quartz by volume, with 35% to 90% of the total feldspar consisting of alkali feldspar . Granitic rocks poorer in quartz are classified as syenites or monzonites , while granitic rocks dominated by plagioclase are classified as granodiorites or tonalites . Granitic rocks with over 90% alkali feldspar are classified as alkali feldspar granites . Granitic rock with more than 60% quartz, which
7134-598: The European Union safety standards (section 4.1.1.1 of the National Health and Engineering study) and radon emission levels well below the average outdoor radon concentrations in the US. Granite and related marble industries are considered one of the oldest industries in the world, existing as far back as Ancient Egypt . Major modern exporters of granite include China, India, Italy, Brazil, Canada, Germany, Sweden, Spain and
7257-641: The Figure is not known as a Bald Eagle, but looks more like a Turkey. For in Truth the Turkey is in Comparison a much more respectable Bird, and withal a true original Native of America ... He is besides, though a little vain & silly, a Bird of Courage, and would not hesitate to attack a Grenadier of the British Guards who should presume to invade his Farm Yard with a red Coat on. Franklin never publicly voiced opposition to
7380-534: The Florida peninsula, they number from 80,000 to 100,000 birds. This bird is named for the famous Seminole leader Osceola , and was first described in 1890. It is smaller and darker than the eastern wild turkey. The wing feathers are very dark with smaller amounts of the white barring seen on other subspecies. Their overall body feathers are an iridescent green-purple color. They are often found in scrub patches of palmetto and occasionally near swamps, where amphibian prey
7503-595: The National Park Service. Enchanted Rock was rated in 2017 as the best campsite in Texas in a 50-state survey. The State Natural Area had 307,686 visitors in 2022. The prominent granite dome is visible for many miles in the surrounding basin of the Llano Uplift. The weathered dome, standing above the surrounding plain, is known to geologists as a monadnock. The rock is actually only the visible above-ground portion of
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#17328593401847626-783: The Representative of our Country. He is a Bird of bad moral Character. He does not get his Living honestly. You may have seen him perched on some dead Tree near the River, where, too lazy to fish for himself, he watches the Labour of the Fishing Hawk [ osprey ]; and when that diligent Bird has at length taken a Fish, and is bearing it to his Nest for the Support of his Mate and young Ones, the Bald Eagle pursues him and takes it from him. With all this Injustice, he
7749-448: The United States. The Red Pyramid of Egypt ( c. 2590 BC ), named for the light crimson hue of its exposed limestone surfaces, is the third largest of Egyptian pyramids . Pyramid of Menkaure , likely dating 2510 BC, was constructed of limestone and granite blocks. The Great Pyramid of Giza (c. 2580 BC ) contains a huge granite sarcophagus fashioned of "Red Aswan Granite". The mostly ruined Black Pyramid dating from
7872-576: The bald eagle as a national symbol, nor did he ever publicly suggest the turkey as a national symbol. The wild turkey, throughout its range, plays a significant role in the cultures of many Native American tribes all over North America. It is a favorite meal in eastern tribes. Eastern Native American tribes consumed both the eggs and meat, sometimes turning the latter into a type of jerky to preserve it and make it last through cold weather. They provided habitat by burning down portions of forests to create meadows which would attract mating birds, and thus give
7995-419: The base of the chamber are the same ones that would crystallize anyway, but crustal assimilation is detectable in isotope ratios. Heat loss to the country rock means that ascent by assimilation is limited to distance similar to the height of the magma chamber. Physical weathering occurs on a large scale in the form of exfoliation joints , which are the result of granite's expanding and fracturing as pressure
8118-418: The big difference in rheology between mafic and felsic magmas makes this process problematic in nature. Granitization is an old, and largely discounted, hypothesis that granite is formed in place through extreme metasomatism . The idea behind granitization was that fluids would supposedly bring in elements such as potassium, and remove others, such as calcium, to transform a metamorphic rock into granite. This
8241-541: The body feathers are copper and greenish-gold. This subspecies is heavily protected owing to its skittish nature and threatened status. The south Mexican wild turkey is considered the nominate subspecies , and the only one that is not found in the United States or Canada. In central Mexico, archaeological M. gallopavo bones have been identified at sites dating to 800–100 BC. It is unclear whether these early specimens represent wild or domestic individuals, but domestic turkeys were likely established in central Mexico by
8364-492: The canopy top and find perches. They usually fly close to the ground for no more than 400 m (a quarter mile). Wild turkeys have very good eyesight, but their vision is very poor at night. They will generally not see a predator until it is too late. At twilight most turkeys will head for the trees and roost well off the ground: it is safer to sleep there in numbers than to risk being victim to predators who hunt by night. Because wild turkeys do not migrate, in snowier parts of
8487-434: The central plain states, was first described in 1879, and has relatively long legs, better adapted to a prairie habitat. Its body feathers often have a green-coppery sheen. The tips of the tail and lower back feathers are a buff-to-very light tan color. Its habitats are brush areas next to streams, rivers or mesquite , pine and scrub oak forests. The Rio Grande turkey is gregarious . The Merriam's wild turkey ranges through
8610-499: The central valleys to the northern mountains of Mexico and the southernmost parts of Arizona and New Mexico . Gould's wild turkeys are heavily protected and regulated. The subspecies was first described in 1856. They exist in small numbers in the U.S. but are abundant in northwestern portions of Mexico. A small population has been established in southern Arizona. Gould's are the largest of the six subspecies. They have longer legs, larger feet, and longer tail feathers. The main colors of
8733-1120: The deer with their improved olfactory sense, the turkey with its superior sight, and squirrels providing an additional set of eyes from the air. Predators of eggs and nestlings include raccoons ( Procyon lotor ), Virginia opossums ( Didelphis virginiana ), striped skunks ( Mephitis mephitis ), spotted skunks ( Spilogale ssp.), red foxes ( Vulpes vulpes ), gray foxes ( Urocyon citnereoargenteus ), groundhogs ( Marmota monax ), among other rodents . Predators of poults in addition to nestlings and eggs also include several species of snake, namely rat snakes ( Elaphe ssp.), gopher snakes ( Pituophis catenifer ), and pinesnakes ( Pituophis ssp.). Avian predators of poults include raptors such as bald eagles ( Haliaeetus leucocephalus ), barred owl ( Strix varia ), red-shouldered ( Buteo lineatus ), red-tailed ( Buteo jamaicensis ), white-tailed ( Geranoaetus albicaudatus ), Harris's hawks ( Parabuteo unicinctus ), Cooper's hawk ( Accipiter cooperii ), and broad-winged hawk ( Buteo platypterus ) (both likely of very small poults). Mortality of poults
8856-404: The division between S-type (produced by underplating) and I-type (produced by injection and differentiation) granites, discussed below. The composition and origin of any magma that differentiates into granite leave certain petrological evidence as to what the granite's parental rock was. The final texture and composition of a granite are generally distinctive as to its parental rock. For instance,
8979-408: The dominant male gobbling, spreading his tail feathers (strutting), drumming/booming, and spitting. In a study, the average dominant male that courted as part of a pair of males fathered six more eggs than males that courted alone. Genetic analysis of pairs of males courting together shows that they are close relatives, with half of their genetic material being identical. The theory behind team-courtship
9102-467: The early 16th century became known as spolia . Through the process of case-hardening , granite becomes harder with age. The technology required to make tempered metal chisels was largely forgotten during the Middle Ages. As a result, Medieval stoneworkers were forced to use saws or emery to shorten ancient columns or hack them into discs. Giorgio Vasari noted in the 16th century that granite in quarries
9225-431: The east-slope of Mt. Hood and natural immigration of turkeys from Idaho has established Merriam's flocks along the eastern border of Oregon. Merriam's wild turkeys live in ponderosa pine and mountainous regions. The subspecies was named in 1900 in honor of Clinton Hart Merriam , the first chief of the U.S. Biological Survey . The tail and lower back feathers have white tips and purple and bronze reflections. Native from
9348-561: The eggs if they find them. The American alligator ( Alligator mississippiensis ) is a predator to all turkeys of all ages in the Southeast and will eat them if they get too close to water. Humans are now the leading predator of adult turkeys. When approached by potential predators, turkeys and their poults usually run rather than fly away, though they may also fly short distances if pressed. Another alternative behaviour, common in Galliformes ,
9471-458: The first Texans became the wellspring of Plains Indian culture. Based on archaeological evidence, human habitation at Enchanted Rock can be traced back at least 10,000 years. Paleo-Indian projectile points or arrowheads, 11–12,000 years old, have been found in the area upstream and downstream from the rock. The oldest authenticated projectile point found within the present-day park is a Plainview point , dating back 10,000 years. The rock has been
9594-593: The first half of the Classic Period (c. AD 200–1000). Late Preclassic (300 BC–AD 100) turkey remains identified at the archaeological site of El Mirador (Petén, Guatemala) represent the earliest evidence of the export of the south Mexican wild turkey ( Meleagris gallopavo gallopavo ) to the ancient Maya world. The south Mexican wild subspecies, M. g. gallopavo , was domesticated either in Mexico or by Preclassic peoples in Mesoamerica , giving rise to
9717-579: The first magma to enter solidifies and provides a form of insulation for later magma. These mechanisms can operate in tandem. For example, diapirs may continue to rise through the brittle upper crust through stoping , where the granite cracks the roof rocks, removing blocks of the overlying crust which then sink to the bottom of the diapir while the magma rises to take their place. This can occur as piecemeal stopping (stoping of small blocks of chamber roof), as cauldron subsidence (collapse of large blocks of chamber roof), or as roof foundering (complete collapse of
9840-684: The grotto is a highly regarded piece of Buddhist art , and along with the temple complex to which it belongs, Seokguram was added to the UNESCO World Heritage List in 1995. Rajaraja Chola I of the Chola Dynasty in South India built the world's first temple entirely of granite in the 11th century AD in Tanjore , India . The Brihadeeswarar Temple dedicated to Lord Shiva was built in 1010. The massive Gopuram (ornate, upper section of shrine)
9963-464: The ground. Turkeys are also known to eat a wide variety of grasses . Turkey populations can reach large numbers in small areas because of their ability to forage for different types of food. Early morning and late afternoon are the desired times for eating. Males are polygamous , mating with as many hens as they can. Male wild turkeys display for females by puffing out their feathers, spreading out their tails, and dragging their wings. This behavior
10086-494: The head and neck all become red with enhanced flow of blood to the head. Tail feathers are of the same length in adults but of different lengths in juveniles. Males have a long, dark, fan-shaped tail and glossy, bronze wings. As with many other species of Galliformes , turkeys exhibit strong sexual dimorphism . The male is substantially larger than the female, and his feathers have areas of red, purple, green, copper, bronze, and gold iridescence . The preen gland ( uropygial gland )
10209-400: The heaviest member of the order Galliformes . It is the ancestor to the domestic turkey ( M. g. domesticus ), which was originally derived from a southern Mexican subspecies of wild turkey (not the related ocellated turkey ). An adult male (tom or gobbler) normally weighs from 5 to 11 kg (11 to 24 lb) and measures 100–125 cm (39–49 in) in length. The adult female (hen)
10332-576: The letter is a criticism of the Society of the Cincinnati , which he likened to a chivalric order , which contradicted the ideals of the newly founded American republic . In one section of the letter, Franklin remarked on the appearance of the bald eagle on the Society's crest: Others object to the Bald Eagle, as looking too much like a Dindon, or Turkey. For my own part I wish the Bald Eagle had not been chosen
10455-474: The lower crust , rather than by decompression of mantle rock, as is the case with basaltic magmas. It has also been suggested that some granites found at convergent boundaries between tectonic plates , where oceanic crust subducts below continental crust, were formed from sediments subducted with the oceanic plate. The melted sediments would have produced magma intermediate in its silica content, which became further enriched in silica as it rose through
10578-697: The lower continental crust at high thermal gradients. This leads to significant extraction of hydrous felsic melts from granulite-facies resitites. A-type granites occur in the Koettlitz Glacier Alkaline Province in the Royal Society Range, Antarctica. The rhyolites of the Yellowstone Caldera are examples of volcanic equivalents of A-type granite. M-type granite was later proposed to cover those granites that were clearly sourced from crystallized mafic magmas, generally sourced from
10701-635: The lower half of the Western Quebec Seismic Zone ), and the Maritime Provinces . They number from 5.1 to 5.3 million birds. They were first named 'forest turkey' in 1817, and can grow up to 4 ft (1.2 m) tall. The upper tail coverts are tipped with chestnut brown. Males can reach 30 lb (14 kg) in weight. The eastern wild turkey is heavily hunted in the Eastern USA and is the most hunted wild turkey subspecies. Most common in
10824-435: The magma is inevitable once enough magma has accumulated. However, the question of precisely how such large quantities of magma are able to shove aside country rock to make room for themselves (the room problem ) is still a matter of research. Two main mechanisms are thought to be important: Of these two mechanisms, Stokes diapirism has been favoured for many years in the absence of a reasonable alternative. The basic idea
10947-426: The magma. Other processes must produce these great volumes of felsic magma. One such process is injection of basaltic magma into the lower crust, followed by differentiation, which leaves any cumulates in the mantle. Another is heating of the lower crust by underplating basaltic magma, which produces felsic magma directly from crustal rock. The two processes produce different kinds of granites, which may be reflected in
11070-408: The magmatic parent of granitic rock. The residue of the source rock becomes a granulite . The partial melting of solid rocks requires high temperatures and the addition of water or other volatiles which lower the solidus temperature (temperature at which partial melting commences) of these rocks. It was long debated whether crustal thickening in orogens (mountain belts along convergent boundaries )
11193-405: The mantle. Although the fractional crystallisation of basaltic melts can yield small amounts of granites, which are sometimes found in island arcs, such granites must occur together with large amounts of basaltic rocks. H-type granites were suggested for hybrid granites, which were hypothesized to form by mixing between mafic and felsic from different sources, such as M-type and S-type. However,
11316-616: The name "Crying Rock" has also been given to the formation. A plaque formerly embedded in Enchanted Rock near the top but now displayed in a kiosk below reads: From its summit in the fall of 1841, Captain John C. Hays , while surrounded by Comanche Indians who cut him off from his ranging company, repulsed the whole band and inflicted upon them such heavy losses that they fled. Other legends associated with Enchanted Rock: [REDACTED] National Register of Historic Places portal [REDACTED] Texas portal Granite Granite
11439-401: The nest in about 12–24 hours. Turkeys are a ground nesting bird, and because of this they are heavily predated on; reproductively-active wild turkeys have a lower annual survival rate due to predation of nests. Turkeys will occasionally forage with deer and squirrels , and may even play with them. By foraging together, each can help the other watch for predators with their different senses:
11562-441: The overlying crust. Early fractional crystallisation serves to reduce a melt in magnesium and chromium, and enrich the melt in iron, sodium, potassium, aluminum, and silicon. Further fractionation reduces the content of iron, calcium, and titanium. This is reflected in the high content of alkali feldspar and quartz in granite. The presence of granitic rock in island arcs shows that fractional crystallization alone can convert
11685-490: The purchase of 630 acres adjacent to Enchanted Rock, which would expand the size of the park by almost 40%. Folklore of local Tonkawa , Apache and Comanche tribes ascribe magical and spiritual powers to the rock (hence the name Enchanted Rock). The Tonkawa, who inhabited the area in the 16th century, believed that ghost fires flickered at the top of the dome. In particular, they heard unexplained creaking and groaning, which geologists attribute to night-time contraction of
11808-702: The reign of Amenemhat III once had a polished granite pyramidion or capstone, which is now on display in the main hall of the Egyptian Museum in Cairo (see Dahshur ). Other uses in Ancient Egypt include columns , door lintels , sills , jambs , and wall and floor veneer. How the Egyptians worked the solid granite is still a matter of debate. Tool marks described by the Egyptologist Anna Serotta indicate
11931-551: The risk factors in granite country and design rules relating, in particular, to preventing accumulation of radon gas in enclosed basements and dwellings. A study of granite countertops was done (initiated and paid for by the Marble Institute of America) in November 2008 by National Health and Engineering Inc. of USA. In this test, all of the 39 full-size granite slabs that were measured for the study showed radiation levels well below
12054-406: The rock after being heated by the sun during the day. The first European to visit the area was probably Álvar Núñez Cabeza de Vaca in 1536. To elude Anglo settlers in the area, the natives would hide on the top two tiers of the rock, where they could not be seen from the ground below. The name "Enchanted Rock" derives from Spanish and Anglo-Texan interpretations of such legends and related folklore;
12177-418: The rock's high quartz content and dearth of available bases, with the base-poor status predisposing the soil to acidification and podzolization in cool humid climates as the weather-resistant quartz yields much sand. Feldspars also weather slowly in cool climes, allowing sand to dominate the fine-earth fraction. In warm humid regions, the weathering of feldspar as described above is accelerated so as to allow
12300-403: The rock. Specific species include plateau live oak , Texas beargrass , prickly pear cactus , and sideoats grama . Archaeological evidence indicates human visitation at the rock going back at least 11,000 years, per the book The Enchanted Rock published in 1999 by Ira Kennedy: These hunter-gatherers had flint-tipped spears, fire, and stories. With these resources, some 12,000 years ago,
12423-414: The rocks often bear a close resemblance. Under these conditions, granitic melts can be produced in place through the partial melting of metamorphic rocks by extracting melt-mobile elements such as potassium and silicon into the melts but leaving others such as calcium and iron in granulite residues. This may be the origin of migmatites . A migmatite consists of dark, refractory rock (the melanosome ) that
12546-489: The roof of a shallow magma chamber accompanied by a caldera eruption.) There is evidence for cauldron subsidence at the Mt. Ascutney intrusion in eastern Vermont. Evidence for piecemeal stoping is found in intrusions that are rimmed with igneous breccia containing fragments of country rock. Assimilation is another mechanism of ascent, where the granite melts its way up into the crust and removes overlying material in this way. This
12669-477: The species's habitat like the Northeast, Rockies, much of Canada, and the Midwest, it is very important for this bird to learn to select large conifer trees where they can fly onto the branches and shelter from blizzards. Wild turkeys have many calls: assembly call , gobble, plain yelp, purr, cluck and purr, cluck, cutt, excited yelp, fly-down cackle, tree call, kee kee run, and putt. In early spring, males older than
12792-588: The spurs on their back of the legs as a weapon, bite with their beak, and ram with their relatively large bodies and may be able to deter predators up to the size of mid-sized mammals. Hens have been observed chasing off at least two species of hawks in flight when their poults are threatened. Wild turkeys are not usually aggressive towards humans, but can be frightened or provoked to behave with aggression. They are most likely to attack if startled, cornered, harassed, or if approached too closely. Attacks and potential injuries can usually be avoided by giving wild turkeys
12915-853: The state. In San Diego County , turkeys tend to be found farther from the coast, usually a minimum of 30–50 miles inland, at reasonably higher elevation; there is a healthy turkey population inhabiting the montane conifer woods and open oak forest habitats of the Cleveland National Forest , a region which borders on high desert and generally receives very minimal annual precipitation. Turkeys in these areas can be found in dense thickets of manzanita ( Arctostaphylos ), often growing on arid hillsides, for shelter and nesting sites, as well as rocky and boulder-strewn chaparral foothills. Despite their weight, wild turkeys, unlike their domesticated counterparts , are agile, fast fliers. In ideal habitat of open woodland or wooded grasslands, they may fly beneath
13038-529: The state. They frequent the lower-elevation oak woodlands of the Sierra Nevada foothills and Coast Ranges , and the central coast north through Mendocino County , which is primarily open conifer forest with various species of ferns growing in the understory. They can also be found in the conifer foothills and fern-heavy forested areas of the Klamath Mountains and Cascade Range in the northern areas of
13161-458: The subject of numerous geological surveys and paintings. In 2016, two citizens of San Marcos, Texas were arrested for vandalizing the "... south face of the summit at Enchanted Rock State Park". The summit was vandalized with graffiti again in 2018 but no arrests have been made in that case. Such vandalism is a state felony in Texas, carrying "a penalty of up to two years in state jail and a $ 10,000 fine if convicted". In August 2024 TPWD approved
13284-435: The surface than magmas of I-type granites, which are thus more common as volcanic rock (rhyolite). They are also orogenic but range from metaluminous to strongly peraluminous. Although both I- and S-type granites are orogenic, I-type granites are more common close to the convergent boundary than S-type. This is attributed to thicker crust further from the boundary, which results in more crustal melting. A-type granites show
13407-469: The surplus birds with a device that would have a projectile net that would ensnare the creature, move it to another unoccupied territory, and repeat the cycle. Over time this included some in the western states where it was not native. There is evidence that the bird does well when near farmland, which provides grain and also berry-bearing shrubs at its edges. As wild turkey numbers rebounded, hunting became legal in 49 U.S. states (excluding Alaska ). In 1973,
13530-406: The surrounding terrain to an elevation of 1,825 feet (556 m) above sea level. It is the largest pink granite monadnock in the United States. Enchanted Rock State Natural Area, a part of the Texas state park system, includes 1,644 acres (665 ha). In 1936, the area was designated a Recorded Texas Historic Landmark . In 1971, Enchanted Rock was designated as a National Natural Landmark by
13653-440: The texture is known as porphyritic . A granitic rock with a porphyritic texture is known as a granite porphyry . Granitoid is a general, descriptive field term for lighter-colored, coarse-grained igneous rocks. Petrographic examination is required for identification of specific types of granitoids. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy . The alkali feldspar in granites
13776-470: The third Saturday of the month starting April, May, September, October, November, and December. Private tours are available for groups at other times. The Granite Gripper is an annual rock climbing competition that acts as a fundraiser for park conservation through the Friends of Enchanted Rock . Emphasis is placed on activity safety and ecological preservation. Visitors are asked to keep human incursion at
13899-573: The total U.S. population was estimated to be 1.3 million, and current estimates place the entire wild turkey population at 7 million individuals. Since the 1980s, "trap and transfer" projects have reintroduced wild turkeys to several provinces of Canada as well, sometimes from across the border in the United States. They appear to be very successful as of 2018 as wild turkeys have multiplied rapidly and flourished in places where they were not expected to survive by Canadian scientists, often quite far north of their original expected range. Attempts to introduce
14022-602: The turkey, including the American white pelican ( Pelecanus erythrorhynchos ), the tundra swan ( Cygnus columbianus columbianus ), the endangered California condor ( Gymnogyps californianus ), and whooping crane ( Grus americana ). Wild turkeys prefer hardwood and mixed conifer -hardwood forests with scattered openings such as pastures , fields , orchards and seasonal marshes . They seemingly can adapt to virtually any dense native plant community as long as coverage and openings are widely available. Open, mature forest with
14145-502: The uranium washes into the sediments from the granite uplands and associated, often highly radioactive pegmatites. Cellars and basements built into soils over granite can become a trap for radon gas, which is formed by the decay of uranium. Radon gas poses significant health concerns and is the number two cause of lung cancer in the US behind smoking. Thorium occurs in all granites. Conway granite has been noted for its relatively high thorium concentration of 56±6 ppm. There
14268-599: The use of flint tools on finer work with harder stones, e.g. when producing the hieroglyphic inscriptions. Patrick Hunt has postulated that the Egyptians used emery , which has greater hardness. The Seokguram Grotto in Korea is a Buddhist shrine and part of the Bulguksa temple complex. Completed in 774 AD, it is an artificial grotto constructed entirely of granite. The main Buddha of
14391-503: The wild turkey is quite long and sturdy, measuring from 9.7 to 19.1 cm (3.8 to 7.5 in). The tail is also relatively long, ranging from 24.5 to 50.5 cm (9.6 to 19.9 in). Fully-grown wild turkeys have long, reddish-yellow to grayish-green legs. Each foot has three front toes, with a shorter, rear-facing toe; males have a spur behind each of their lower legs, used to spar with other males. The body feathers are generally blackish and dark, sometimes gray-brown, overall, with
14514-639: The wild turkey to Britain as a game bird in the 18th century were not successful. George II is said to have had a flock of a few thousand in Richmond Park near London, but they were too easy for local poachers to destroy, and the fights with poachers became too dangerous for the gamekeepers . They were hunted with dogs and then shot out of trees where they took refuge. Several other populations, introduced or escaped, have survived for periods elsewhere in Britain and Ireland , but seem to have died out, perhaps from
14637-472: Was "far softer and easier to work than after it has lain exposed" while ancient columns, because of their "hardness and solidity have nothing to fear from fire or sword, and time itself, that drives everything to ruin, not only has not destroyed them but has not even altered their colour." Wild turkey 6, see text The wild turkey ( Meleagris gallopavo ) is an upland game bird native to North America , one of two extant species of turkey and
14760-405: Was mainly longleaf pine ( Pinus palustris ) with turkey oak ( Quercus laevis ) and slash pine ( Pinus elliottii ) "flatwoods", now mainly replaced by slash pine plantations. In California , turkeys live in a wide range of habitats; acorns are a favorite food, in addition to wild oats ( Avena barbata ), drawing turkeys to areas of open oak forest and oak savanna across the central areas of
14883-405: Was sufficient to produce granite melts by radiogenic heating , but recent work suggests that this is not a viable mechanism. In-situ granitization requires heating by the asthenospheric mantle or by underplating with mantle-derived magmas. Granite magmas have a density of 2.4 Mg/m , much less than the 2.8 Mg/m of high-grade metamorphic rock. This gives them tremendous buoyancy, so that ascent of
15006-564: Was supposed to occur across a migrating front. However, experimental work had established by the 1960s that granites were of igneous origin. The mineralogical and chemical features of granite can be explained only by crystal-liquid phase relations, showing that there must have been at least enough melting to mobilize the magma. However, at sufficiently deep crustal levels, the distinction between metamorphism and crustal melting itself becomes vague. Conditions for crystallization of liquid magma are close enough to those of high-grade metamorphism that
15129-720: Was the turkey subspecies Europeans first encountered in the wild: by the Puritans , the founders of Jamestown , the Dutch who lived in New York, and by the Acadians . Its range is one of the largest of all subspecies, covering the entire eastern half of the United States from Maine in the north to northern Florida and extending as far west as Minnesota , Illinois , and into Missouri . In Canada, its range extends into Southeastern Manitoba , Ontario , Southwestern Quebec (including Pontiac, Quebec and
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