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American Bison, Buffalo
Bison standing in meadow in Yellowstone National Park with frost on fur on a very cold morning in winter with snow on the ground
Bison or buffalo bull digs his way through deep snow during a heavy snow fall in Yellowstone's Lamar Valley in Wyoming and Montana USA
A bison runs through a field of snow in Yellowstone National Park
Norris Geyser Basin in Yellowstone in Winter
Bison on the Madison River in Winter, Yellowstone National Park.
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Tazhenranskaya steppe on the coast of the Baikal Lake in winter - Siberia, Russia
Landscape of geyser basin with smoke and background of pine forest inside hot zone of Yellowstone National Park, Wyoming, USA.
Herd of Bisons sitting in Yellowstone National Park, Wyoming, USA.
Grey (or gray) wolf looking over buffalo (bison) on snow covered hill.  This wolf is a large canine native to Eurasia and North America. The wolf is the largest extant member of the family Canidae, males average 88 lbs. and females average 82 lbs. The grey wolf can be various colors.  The banded fur is usually mottled white, brown, gray, and black. This was near Tower junction in Yellowstone National Park between Gardiner and Cooke City Montana. Larger nearby cities are Bozeman and Billings, Montana. John Morrison Photographer
Norris Geyser Basin, Yellowstone, Wyoming - United States of America
American Bison (Bos bison, Bison bison) Herd  Grazing in the Rolling Winter Hills of Yellowstone National Park, Wyoming
A coyote contemplates his next move in a snowy Yellowstone National Park
Around 8000 Elk (Cervus canadensis) live at the base of these  snow-covered Teton Mountains in the Elk Wildlife Refuge, Jackson Hole, Wyoming, USA
Yellowstone National Park’s thermal features can be seen as the product of millions of years of geology at work.  Geysers are hot springs that erupt periodically. The eruptions is the result of super-heated water below-ground becoming trapped in channels leading to the surface.
Bison crossing the Firehole River in Yellowstone National Park
Stream Flowing into the Snake River in Grand Teton National Park, Wyoming in Winter.
Bison or buffalo cows marching through snow in Yellowstone of Wyoming in western USA of North America.
A river weaves its way through a snowy winter scene with banks covered in white snow and the Rocky Mountains of Colorado in the background
American Bison, Bison bison, Winter in Yellowstone National Park, Wyoming. Feeding as a herd in the open snow covered plain.
The iconic american bison in Yellowstone's Lamar Valley during the cold winter months.
Bull moose in rutting season, Grand Teton National Park on a beautiful day.
photos of a wild bison in yellowstone national park, wyoming, usa
Herd of elk grazing late winter in Yellowstone National Park. Overall scenic with sweeping vista. mountains in background are in shadow giving cold feeling to overall scene. Animals appear healthy probably due to a light snowfall this year.
Castle geyser eruption and volcanic activity, Yellowstone national park, Wyoming, USA.
Buffalo or bison herd moving to better conditions in Lamar Valley in Yellowstone National Park which includes refuge in Wyoming and Montana in the western part of the United States of America (USA).
Old Faithful Yellowstone National Park, Wyoming, USA.
American Bison in front of geysers in Yellowstone National Park
Winter in Yellowstone National Park
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