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  • A warning sign at the cattle guard gate to the Windmill Pasture in the Tallgrass Prairie National Preserve warns visitors not to approach the bison herd and of the solar-powered electric fence that is in use. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. The electric fence is powered by a Kyocera Photovoltaic Module (Model KC5COT) solar panel that is connected to a fence battery system manufactured by Taylor Fence, Inc. (Cyclops Power on Demand Brute Battery). The 10,894-acre Tallgrass Prairie National Preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison and electric fence warning sig...jpg
  • Bison footprints are captured in dry cracked earth in the Windmill Pasture of the Tallgrass Prairie National Preserve in the Flint Hills in Kansas. The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    cracked earth.jpg
  • Late afternoon sunlight bathes the rolling hills of the nearly 11,000 acre Tallgrass Prairie National Preserve in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Pictured is the main road as it travels through the Windmill Pasture. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    main road.jpg
  • A solar panel powers an electric fence used for controlling cattle and bison along the Windmill and West Traps pastures at the Tallgrass Prairie National Preserve. The electric fence is powered by a Kyocera Photovoltaic Module (Model KC5COT) solar panel that is connected to a fence battery system manufactured by Taylor Fence, Inc. (Cyclops Power on Demand Brute Battery). The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Solar powered electric fence.jpg
  • Dung beetles roll a ball of bison dung along a road in the Tallgrass Prairie National Preserve located in the Flint Hills of Kansas near the towns of Strong City and Cottonwood Falls. Dung beetles feed on manure, using it provide housing and food for their offspring and for prairie and pasture nutrient recycling. A male and a female beetle will work in a pair to roll a ball of dung away from a manure pile. They then will bury the ball as a home for their young. Drawn to manure by odor, a beetle will fly up to 10 miles in search of the right manure. Studies have also shown that dung beetles use the Milky Way as a directional bearing to navigate. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Dung beetle.jpg
  • Prairie grasses, wildflowers and a cottonwood tree are bathed in the dawn light moments before a fall sunrise at the Tallgrass Prairie National Preserve. The 10,894-acre Tallgrass Prairie National Preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Prairie sunrise 4.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Some of the bison are shedding their winter coat to stay cool. Birds use spent bison hair to line their nests. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison on tallgrass prairie.jpg
  • Evening sunset light bathes evening primrose and the rolling hills of the 10,894-acre Tallgrass Prairie National Preserve in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Evening primrose.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison herd.jpg
  • A bison grazes at the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. This bison is losing its winter coat to help it stay cool. Birds use spent bison hair to line their nests. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison.jpg
  • Heather Brown, Chief of Interpretation at the Tallgrass Prairie National Preserve, leads a group of visitors on a tour of the prairie using the park's tour bus on a fall day in October. The 10,894-acre Tallgrass Prairie National Preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Visitor bus.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. A calf born in May 2010 brought the size of the herd to 14 bison. The preserve plans to add more bison form Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison on prairie.jpg
  • A bison rubs against another bison at the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. These bison are losing their winter coat to help them stay cool. Birds use spent bison hair to line their nests. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison.jpg
  • Heather Brown, Chief of Interpretation at the Tallgrass Prairie National Preserve, leads a group of visitors on a tour of the prairie on a fall day in October. The 10,894-acre Tallgrass Prairie National Preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Prairie tour.jpg
  • Heather Brown, Chief of Interpretation at the Tallgrass Prairie National Preserve, leads a group of visitors on a tour of the prairie on a fall day in October. The 10,894-acre Tallgrass Prairie National Preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Prairie hike.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison on tallgrass prairie 2.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison on prairie.jpg
  • Limestone, like this piece photographed at sunset on the prairie at the Tallgrass Prairie National Preserve in the Kansas Flint Hills, is a common sight and the reason for the survival of the tallgrass prairie in the Flint Hills. Prairie soil is heavily laden with limestone and chert (commonly called flint) making it unsuitable for plowing. This rocky soil, combined with a cycle of wildfires and animal grazing has preserved the tallgrass prairie. The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Flint Hills limestone.jpg
  • A male dickcissel, in breeding plumage, perches on several blades of prairie grass at the Tallgrass Prairie National Preserve in the Flint Hills in Kansas. Singing dickcissels are commonly heard on the prairie. Dickcissels winter far south of their summer breeding areas in the midwest, typically migrating in large flocks to Mexico, Central America, and northern South America. The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    dickcissel-1.jpg
  • This wavy-leaf thistle was photographed in the Tallgrass Prairie National Preserve located in the Kansas Flint Hills. American Indians ate the roots of the wavy-leaf thistle and also used the roots to make an eye wash tea for the treatment for eye diseases in people and livestock. The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    wavy-leaf thistle.jpg
  • Bison graze in the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. A calf born in May 2010 brought the size of the herd to 14 bison. The preserve plans to add more bison form Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison on prairie-2.jpg
  • A recently born bison calf, the first born at the Tallgrass Prairie National Preserve since at least the mid-1800s when the property was fenced for cattle ranching, grazes with the rest of the bison herd. The calf was born on Mother's Day, May 9, 2010. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Newly born bison are lighter in color but as they grow older, their color changes to dark brown. The pictured older bison are losing their winter coat to help them stay cool. Birds use spent bison hair to line their nests. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy. The 10,894-acre preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls.
    Bison calf.jpg
  • A recently born bison calf, the first born at the Tallgrass Prairie National Preserve since at least the mid-1800s when the property was fenced for cattle ranching, grazes with the rest of the bison herd. Newly born bison are lighter in color but as they grow older, their color changes to dark brown. The calf was born on Mother's Day, May 9, 2010. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy. The 10,894-acre preserve is located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls.
    Bison calf-2.jpg
  • A bison grazes at the 10,894-acre Tallgrass Prairie National Preserve located in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. This bison is losing its winter coat to help it stay cool. Birds use spent bison hair to line their nests. In October 2009, the Tallgrass Prairie National Preserve brought 13 genetically pure bison from Wind Cave National Park in South Dakota. The preserve plans to add more bison from Wind Cave with a final herd size between 75 and 100 bison. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Bison-3.jpg
  • Early evening sunlight bathes the rolling hills of the nearly 11,000 acre Tallgrass Prairie National Preserve in the Flint Hills of Kansas in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    Tallgrass prairie.jpg
  • A male dickcissel, in breeding plumage, perches on several blades of prairie grass and sings at the Tallgrass Prairie National Preserve in the Flint Hills in Kansas. Singing dickcissels are commonly heard on the prairie. Dickcissels winter far south of their summer breeding areas in the midwest, typically migrating in large flocks to Mexico, Central America, and northern South America. The 10,894-acre Tallgrass Prairie National Preserve is located in Chase County near the towns of Strong City and Cottonwood Falls. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. Tallgrass Prairie National Preserve is the only unit of the National Park Service dedicated to the preservation of the tallgrass prairie ecosystem. The Tallgrass Prairie National Preserve is co-managed with The Nature Conservancy.
    dickcissel singing, Tallgrass Prairi...jpg
  • A windmill stands in a pasture being burned (background) as part of a prescribed burn in Chase County, Kansas. Prairie grasses in the Flint Hills, like this pasture, are intentionally burned by land mangers and cattle ranchers in the spring to prepare the land for cattle grazing and help maintain a healthy tallgrass prairie ecosystem. In this photo, burned pasture is contrasted with unburned grass. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. The prairie has survived here because the soil is heavily laden with limestone and chert (commonly called flint) making it unsuitable for plowing. This rocky soil, combined with a cycle of wildfires and animal grazing has preserved the tallgrass prairie.
    Windmill.jpg
  • Prairie grasses in the Kansas Flint Hills, like this pasture in Chase County, are intentionally burned by land mangers and cattle ranchers in the spring to prepare the land for cattle grazing and help maintain a healthy tallgrass prairie ecosystem. Less than four percent of the original 140 million acres of tallgrass prairie remains in North America. Most of the remaining tallgrass prairie is in the Flint Hills in Kansas. The prairie has survived here because the soil is heavily laden with limestone and chert (commonly called flint) making it unsuitable for plowing. This rocky soil, combined with a cycle of wildfires and animal grazing has preserved the tallgrass prairie.
    Prescribed prairie burn.jpg
  • Cattle graze near the Pakini Nui Wind Farm at Ka Lae on the Big Island of Hawaii. The area is known for strong winds and has been the site of several wind farms. The Pakini Nui Wind Farm replaced the nearby Kamaoa Wind Farm in 2007 after the Kamaoa project fell into disrepair and was closed in 2006. The Pakini Nui project consists of 14 General Electric 1.5 MW wind turbines . The wind turbines add 21 megawatts of capacity to the Big Island -- enough power for more than 10,000 homes. Each blade of the pictured turbines is 100 feet long. Ka Lae also known as South Point, is the most southernmost point of the 50 United States.
    South Point wind farm.jpg