Ann & Steve Toon / Domestic sheep (Ovis aries) flock of Northumberland blackface sheep in snow, Tarset, Hexham, Northumberland, UK, November 2010
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Eric Dragesco / A large herd of Tien Shan Argali (Ovis ammon karelini) making tracks through snow. Naryn National Park, Kyrgyzstan, Central Asia, November.
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Edwin Giesbers / European Mouflon (Ovis musimon) male in snow. The Netherlands, January.
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John Cancalosi / Two Sheep (Ovis aries) in snow covered field, Wales, UK, December 2010
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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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Nick Garbutt / Sheep grazing in front of Cemex Cement Works and Limestone Crushing Plant with Lowther Valley and eastern Lake District behind. Shap Fell, Cumbria, UK. January 2009.
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Ross Hoddinott / Domestic Sheep {Ovis aries} in winter blizzard, nr Bradworthy, Devon, UK
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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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Michio Hoshino / Dall's Sheep (Ovis dalli) group on snowy hillside, Alaska
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Lynn M Stone / Bighorn sheep {Ovis canadensis} Female seeking refuge from male Jasper NP Alberta Canada
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Sumio Harada / Bighorn Sheep (Ovis canadensis) ewe and lamb grazing in snow, Glacier National Park, Montana
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Colin Monteath / Domestic Sheep (Ovis aries) and Domestic Goat (Capra hircus) with shepherd out to pick up newborns and keep them warm in ger, northern Mongolia
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Colin Monteath / Domestic Sheep (Ovis aries) and Domestic Goat (Capra hircus) group grazing in winter, Gobi Desert, Mongolia
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Laurie Campbell / Golden eagle (Aquila chrysaetos) female on dead sheep, Inverness-shire, Scotland, December
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Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams in snow, Glacier National Park, Montana
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Pete Oxford / Domestic Sheep (Ovis aries) flock with shepherd in winter, Darkhad Depression, Mongolia
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Peter Cairns / Flock of domestic sheep (Ovis aries) in snow-covered field, Cairngorms NP, Scotland, UK, March
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Ernie Janes / Flock of sheep (Ovis aries) in snow, Ivinghoe Hills, Chilterns, Buckinghamshire, UK. December
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Ann & Steve Toon / Domestic sheep (Ovis aries) Northumberland blackface sheep in snow, Tarset, Hexham, Northumberland, UK, November 2010
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Ann & Steve Toon / Domestic sheep (Ovis aries) Northumberland blackface sheep in snow, Tarset, Hexham, Northumberland, UK, November 2010
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Eric Dragesco / A herd of Tien Shan Argali (Ovis ammon karelini) following each other through snow. Naryn National Park, Kyrgyzstan, Central Asia, November.
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Eric Dragesco / A herd of Tien Shan Argali (Ovis ammon karelini) traversing a snow-covered mountainside. Naryn National Park, Kyrgyzstan, Central Asia, November.
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Eric Dragesco / Tien Shan Argali (Ovis ammon karelini) in snow. Naryn National Park, Kyrgyzstan, Central Asia, November.
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Eric Dragesco / Photographer Eric Dragesco holding the scalp and horns of a Marco Polo Sheep (Ovis ammon polii) with mountainous landscape in the distance. Tajikistan, Central Asia, November.
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Eric Dragesco / A herd of Marco Polo Sheep (Ovis ammon polii) traversing a snowy slope. Tajikistan, Central Asia, November.
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Eric Dragesco / A large herd of Marco Polo Sheep (Ovis ammon polii) migrating across snow, seen from a high angle. Tajikistan, Central Asia, November.
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Eric Dragesco / A small herd of Marco Polo Sheep (Ovis ammon polii) in snow. Tajikistan, Central Asia, November.
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Eric Dragesco / A herd of Marco Polo Sheep (Ovis ammon polii) at the foot of towering mountains. Tajikistan, Central Asia, November.
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Eric Dragesco / A small herd of Marco Polo Sheep (Ovis ammon polii) traversing a slope. Tajikistan, Central Asia, November.
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Eric Dragesco / A line of Marco Polo Sheep (Ovis ammon polii) walking across snowy ground. Tajikistan, Central Asia, November.
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Eric Dragesco / Three Marco Polo Sheep (Ovis ammon polii) walking in a line away from the photographer. Tajikistan, Central Asia, November.
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Eric Dragesco / A Marco Polo Sheep (Ovis ammon polii) seen from a high angle. Tajikistan, Central Asia, November.
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Eric Dragesco / A large herd of Marco Polo Sheep (Ovis ammon polii) seen from a distance. Tajikistan, Central Asia, November.
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Eric Dragesco / Three Marco Polo Sheep (Ovis ammon polii) in snow. Tajikistan, Central Asia, November.
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Eric Dragesco / A herd of Marco Polo Sheep (Ovix ammon polii) on a snowy slope. Tajikistan, Central Asia, November.
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Eric Dragesco / A herd of Marco Polo Sheep (Ovix ammon polii) on a snowy slope. Tajikistan, Central Asia, November.
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Eric Dragesco / A herd of Marco Polo Sheep (Ovis ammon polii) alerted to the photographer's presence. Tajikistan, Central Asia, November.
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David Woodfall / Welsh Mountain and cross breed sheep (Ovis aries) in upland pasture in snow, Gwynedd, North Wales, February 2009
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David Woodfall / Welsh Mountain Sheep (Ovis aries) in snow and wind, Gwynedd, North Wales, February 2009
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David Woodfall / Welsh Mountain and cross breed sheep in upland pasture in snow, Gwynedd, North Wales, UK, February 2009
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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) ram, western Alberta, Canada
01334454
Edwin Giesbers / European Mouflon (Ovis musimon) male in snow. The Netherlands, January.
01334449
Edwin Giesbers / European Mouflon (Ovis musimon) male in snow. The Netherlands, January.
01334450
Edwin Giesbers / European Mouflon (Ovis musimon) male in snow. The Netherlands, January.
01334453
Edwin Giesbers / Two European Mouflon (Ovis musimon) males in snow. The dominant male is to the right, identified by the more developed horns. The Netherlands.
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Edwin Giesbers / European Mouflon (Ovis musimon) female in snow. The Netherlands, January.
01334580
Edwin Giesbers / Five European Mouflon (Ovis musimon) males in snowy woodland. The Netherlands, January.
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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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Orsolya Haarberg / Sheep, shepherd and sheepdog in snow, Bihor, Romania.
00450419
Michael Quinton / Dall's Sheep (Ovis dalli) ram running, Alaska
00450418
Michael Quinton / Dall's Sheep (Ovis dalli) rams play-fighting, Alaska
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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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Ernie Janes / Flock of Sheep in winter, Little Gaddesden Church, Hertfordshire, UK, December 2009
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Mark Raycroft / Shetland Sheepdog (Canis familiaris) in snow
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Angelo Gandolfi / Two Mouflon rams (Ovis musimon) standing in forest with snow falling, Foret de Valdu Niellu, Corte, Parc Naturel Regional de Corse, Corsica island, France, February
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David Tipling / Flock of Barnacle Geese grazing (Branta leucopsis) and sheep at Caerlaverock, Dumfries & Galloway, Scotland, December
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Dave Bevan / Common buzzard (Buteo buteo) scavenging dead lamb in snow, Carmarthenshire, Wales, UK
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Dave Bevan / Common buzzard (Buteo buteo) in snow approaching dead lamb, Carmarthenshire, Wales, UK
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Dave Bevan / Common buzzard (Buteo buteo) in snow scavenging dead lamb, Carmarthenshire, Wales, UK
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John Cancalosi / Flock of Sheep (Ovis aries) grazing on snow covered hillside, Wales, UK, December 2010
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Roger Powell / Local farmer feeding sheep from his Landrover in the winter snow, Rothbury, Northumberland, UK, February 2010
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Gary K. Smith / Winter scenic with sheep feeding on hay in snow covered field, village church in distance, Norfolk, UK, December 2009
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Peter Lewis / Baby lamb (Ovis aries) in the snow above Corfe Castle. Dorset, England, UK. March 2009
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Patricio Robles Gil / Kamchatka snow sheep (Ovis nivicola nivicola) in rocky habitat, Kamchatka, Russia, August
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Patricio Robles Gil / Kamchatka snow sheep (Ovis nivicola) on rocks, Kamchatka, Russia, September
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Patricio Robles Gil / Kamchatka snow sheep (Ovis nivicola) on rocks, Kamchatka, Russia
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Patricio Robles Gil / Kamchatka snow sheep (Ovis nivicola) with lamb on rocks, Kamchatka, Russia, September
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Patricio Robles Gil / Two Kamchatka snow sheep (Ovis nivicola) with lamb on rocks, Kamchatka, Russia, September
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Patricio Robles Gil / Kamchatka snow sheep (Ovis nivicola) on rocks, Kamchatka, Russia
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Patricio Robles Gil / Bighorn sheep (ovis canadensis) ram in light snow, Yellowstone NP, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram sitting, Yellowstone NP, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram, rear view, Yellowstone NP, Wyoming, USA, January
01280814
Patricio Robles Gil / Two Bighorn sheep (Ovis canadensis) rams, one feeding, Wind River Range, Wyoming, USA, January
01280815
Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram running down a snow covered slope, Wind River Range, Wyoming, USA, January
01280816
Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram running down snow covered slope, Wind River Range, Wyoming, USA, January
01280819
Patricio Robles Gil / Bighorn sheep (Ovis canadensis) group during the rut, large ram fighting a smaller ram, Wind River Range, Wyoming, USA, January
01280820
Patricio Robles Gil / Bighorn sheep (Ovis canadensis) group during the rut, large ram fighting a smaller ram, Wind River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ewe in snow, Yellowstone National Park, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram sitting in snow, Yellowstone National Park, Wyoming, USA, January
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Patricio Robles Gil / Two Bighorn sheep (Ovis canadensis) lambs in snow, Yellowstone National Park, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram with ewes feeding in snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Female Bighorn sheep (Ovis canadensis) grazing in snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram walking through snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Female Bighorn sheep (Ovis canadensis) in snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Female Bighorn sheep (Ovis canadensis) lying in snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) lambs with a young males and females, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram lying in snow, Wild River Range, Wyoming, USA, January
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Patricio Robles Gil / Bighorn sheep (Ovis canadensis) ram, portrait, Wild River Range, Wyoming, USA, January
01283659
Nick Upton / Wiltshire horn domestic sheep (Ovis aries) sheltering under trees at edge of snow covered pastureland. Wiltshire, UK, January 2010.
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Nick Upton / Wiltshire horn domestic sheep (Ovis aries) in falling snow on snowy pastureland, foraging at hay feeder. Wiltshire, UK, January 2010.