Diane McAllister / Female Rocky Mountain bighorn sheep ewe (Ovis canadensis canadensis) warning her newborn lamb that a rocky ledge is too close and dangerous. She places her front hoof on the baby's back, stopping it f...
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Montana
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Charlie Summers / Rocky Mountain Bighorn sheep (Ovis canadensis) female jumping barbed wire fence, Montana, USA
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram grazing in snow, Wind River Range, Wyoming, USA, January
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Alberta, Canada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams butting heads, western Montana
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Kevin Schafer / Bighorn Sheep (Ovis canadensis) ram, Jasper National Park, Alberta, Canada
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ZSSD / Bighorn Sheep (Ovis canadensis) male, native to North America, San Diego Zoo Safari Park, California
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Mark Raycroft / Bighorn Sheep (Ovis canadensis) two large rams in a mountain scene
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Sumio Harada / Bighorn Sheep (Ovis canadensis) males butting heads to compete for females, Rocky Mountains, North America
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Sumio Harada / Bighorn Sheep (Ovis canadensis) males butting heads while a third looks on, Rocky Mountains, North America
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Tim Fitzharris / Bighorn Sheep (Ovis canadensis) male, Banff National Park, Alberta, Canada
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Tim Fitzharris / Bighorn Sheep (Ovis canadensis) male, Banff National Park, Alberta, Canada
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Lynn M Stone / Bighorn sheep {Ovis canadensis} Female seeking refuge from male Jasper NP Alberta Canada
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Lynn M Stone / Bighorn sheep (Ovis canadensis). Jasper NP, Canada
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George Sanker / Mature Bighorn Rams (Ovis canadensis) on high mountain pass. Jasper National Park, Alberta, Canada, October.
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Jeff Vanuga / Rocky Mountain Bighorn Sheep (Ovis canadensis) males, horning each other in dominance display. Whiskey Mountain Sheep ranger, Wind River Mts near Dubois, Wyoming.
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Jeff Vanuga / Bighorn Sheep (Ovis canadensis) group of males following a female. Whiskey Mountain, Bighorn Sheep Range in Dubois, Wyoming, November.
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Nick Garbutt / Male Bighorn Sheep (Ovis canadiensis) exhibiting flehmen response after smelling the urine of a female. Shoeshone River Valley, eastern outskirts of Yellowstone National Park, Wyoming, USA, February.
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lambs, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb grazing in snow, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) lamb, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ram in winter, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) rams in alpine zone, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb in alpine zone, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) rams, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) lamb running, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb running, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) lamb, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lambs, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lambs climbing on cliff, Glacier National Park, Montana
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb climbing on cliff, Glacier National Park, Montana
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Mark Carwardine / Male Bighorn sheep (Ovis canadensis) Captive, Living Desert Zoo, Palm Desert, California, USA
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Mark Carwardine / Male Bighorn sheep (Ovis canadensis) feeding, Captive, Living Desert Zoo, Palm Desert, California, USA
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Oriol Alamany / Bighorn Sheep (Ovis canadensis) male in Jasper National Park, Rocky Mountains, Alberta, Canada
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Oriol Alamany / Bighorn Sheep (Ovis canadensis) male in Jasper National Park, Rocky Mountains, Alberta, Canada
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Mark Taylor / Bighorn sheep (Ovis canadensis) ewe standing on rocky ledge, Western USA
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Richard Herrmann / Desert Bighorn Sheep (Ovis canadensis nelsoni) female with Ocotillo (Fouquieria splendens), Anza-Borrego State Park, California
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Danny Green / Bighorn Sheep (Ovis canadensis) on rocky slope. Yellowstone, USA, February.
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Danny Green / Bighorn Sheep (Ovis canadensis) on rocky slope. Yellowstone, USA, February.
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George Sanker / Bighorn sheep (Ovis canadensis) female and suckling young on mountain ledge, Yellowstone NP, Montana, USA, June
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Erlend Haarberg / Bighorn sheep (Ovis canadensis) licking salt from underside of car, Jasper National Park, Canada, September
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Jasper National Park, Alberta, Canada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, detail of ear and horn, Jasper National Park, Alberta, Canada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) group in alpine meadow, Glacier National Park, Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams in snow, Glacier National Park, Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams play-fighting, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams play-fighting, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams play-fighting, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Mission Valley, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Jasper National Park, Alberta, Canada
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George Sanker / Bighorn Sheep (Ovis canadensis) lambs. Yellowstone National Park, Wyoming, USA, June.
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George Sanker / Bighorn Sheep (Ovis canadensis) lambs playing. Yellowstone National Park, Wyoming, USA, June.
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George Sanker / Young Bighorn Sheep (Ovis canadensis) perfectly camouflaged against rocky mountain side. Yellowstone National Park, Wyoming, USA, June.
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Charlie Summers / Rocky Mountain Bighorn (Ovis canadensis) Ewe lying down, Wyoming, USA.
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ram, southern Nevada
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewes in desert habitat, southern Nevada
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewes in desert habitat, southern Nevada
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewes, southern Nevada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram in alpine landscape, Glacier National Park, Montana
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ram, southern Nevada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams in snow, western Alberta, Canada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram in snow, western Alberta, Canada
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, western Montana
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram, western Alberta, Canada
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Sumio Harada / Mountain Lion (Puma concolor) wild female feeding on Bighorn Sheep (Ovis canadensis) carcass, Glacier National Park, Montana
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Sumio Harada / Mountain Lion (Puma concolor) wild female stalking Bighorn Sheep (Ovis canadensis), Glacier National Park, Montana
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Sumio Harada / Mountain Lion (Puma concolor) wild female stalking Bighorn Sheep (Ovis canadensis), Glacier National Park, Montana
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Charlie Summers / Rocky mountain bighorm sheep (Ovis canadensis) four rams gather in dominance huddle, Montana, USA
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Charlie Summers / Rocky mountain bighorm sheep (Ovis canadensis) two rams high kicking each other, dominance behaviour, in snow, Montana, USA
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Charlie Summers / Rocky Mountain Bighorn sheep (Ovis canadensis) ram with full curl horns, Montana, USA
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Charlie Summers / Rocky Mountain Bighorn sheep (Ovis canadensis) ram with full curl horns, jumping barbed wire fence, Montana, USA
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Charlie Summers / Bighorn sheep (Ovis canadensis) ram in low stretch position, Montana, USA
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Charlie Summers / Two Rocky Mountain Bighorn (Ovis canadensis) rams displaying dominance behaviour during the mating season, McMinn Plateau, Yellowstone National Park, Wyoming, USA
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Charlie Summers / Rocky Mountain Bighorn (Ovis canadensis) portrait of ram displaying Flehman grimace to tell if a Ewe has come into estrous, McMinn Plateau,Yellowstone National Park, Wyoming, USA
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Charlie Summers / Rocky Mountain Bighorn (Ovis canadensis) Ram displaying courtship head shaking during the mating season, McMinn Plateau,Yellowstone National Park, Wyoming, USA
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Charlie Summers / Rocky Mountain Bighorn (Ovis canadensis) ram drinking from the Gardner River, north of the town of Gardiner, Montana, USA
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Charlie Summers / Bighorn Sheep (Ovis canadensis) rams butting in dominance behaviour, Big Thompson Canyon of Colorado, USA
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe feeding on bush, Zion National Park, Utah
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) lamb, Zion National Park, Utah
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe and lamb, Zion National Park, Utah
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe and lamb, Zion National Park, Utah
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Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe, Zion National Park, Utah
