Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in snow, Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Female Greater Sage-Grouse (Centrocercus urophasianus) visiting a lek of displaying males. Sublette County, Wyoming. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) and fracking rig. Pinedale Mesa. Sublette County, Wyoming. March.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in spring at sunset, Sublette County, Wyoming. March.
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Gerrit Vyn / Newly hatched, day old Greater sage-grouse (Centrocercus urophasianus) chicks. Sublette County, Wyoming, USA. May.
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Gerrit Vyn / Female Greater sage-grouse (Centrocercus urophasianus) incubating nest under a sage bush canopy. Sublette County, Wyoming, USA. May.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) gathered in the center of a lek as the dominant male displays. Sublette County, Wyoming. March.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) walking across a snow covered lek. Sublette County, Wyoming. March.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) chick in nest surrounded by chicks, newly hatched, Sublette County, Wyoming, USA. May.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) chick in nest surrounded by chicks, newly hatched, Sublette County, Wyoming, USA. May.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) female incubating eggs on nest, Sublette County, Wyoming, USA. May.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) roadkill, Pinedale Mesa Anticline natural gas development. Sublette County, Wyoming, USA, June.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) chick hidden under sage bush. Sublette County, Wyoming, USA. June.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) female hidden in sage landscape. Sublette County, Wyoming. June.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) hen calling her brood. Sublette County, Wyoming, USA. June.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) lek, Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying at lek in spring. Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying at lek in spring. Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying at lek in spring. Sublette County, Wyoming, USA. April.
01523756
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) males displaying at lek in spring. Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying at lek in spring. Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Pronghorn (Antilocapra americana) on a Greater sage-grouse lek (Centrocercus urophasianus) on the Pinedale Mesa Anticline. Sublette County, Wyoming, USA. June.
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Gerrit Vyn / Greater Sage-grouse (Centrocercus urophasianus) roadkill on road, Sublette County, Wyoming. March.
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in spring. Sublette County, Wyoming, USA. April.
01523668
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in snow, Sublette County, Wyoming, USA. April.
01523667
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in snow, Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in snow, Sublette County, Wyoming, USA. April.
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Gerrit Vyn / Female Greater sage-grouse (Centrocercus urophasianus) walking across a snow covered lek. Sublette County, Wyoming, USA. March.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) female, aged 4 years, portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) female, aged 4 years, head portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) female, aged 4 years, head portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) male, aged 3 years, head portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) male, aged 3 years, portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) male, aged 3 years, head portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) male, aged 3 years, head portrait, Wilder Institute Calgary Zoo's Devonian Wildlife Conservation Center, Alberta, Canada. Captive.
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Joel Sartore / Photo Ark / Greater sage grouse (Centrocercus urophasianus) male looking around, Calgary Zoo?s Devonian Wildlife Conservation Center, Canada. Captive.
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Joel Sartore / Photo Ark / A close up of a Greater sage grouse's (Centrocercus urophasianus) male head. The animal looks around. Calgary Zoo?s Devonian Wildlife Conservation Center, Canada. Captive.
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Charlie Hamilton-James / Two Sage grouse (Centrocercus urophasianus) males, lekking display, Pinedale, Wyoming, USA. April.
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Charlie Hamilton-James / Sage grouse (Centrocercus urophasianus) male, lekking display, Pinedale, Wyoming, USA. January.
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Charlie Hamilton-James / Sage grouse (Centrocercus urophasianus) male, lekking display, rear view of feathers, Pinedale, Wyoming, USA. January.
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Charlie Hamilton-James / Two Bureau of Land Management workers attaching a GPRS tag onto a female Sage grouse (Centrocercus urophasianus) at night, Idaho Falls, Idaho, USA. March, 2018.