Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in snow, Sublette County, Wyoming, USA. April.
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Barrie Britton / Male Sage grouse (Centrocercus urophasianus) displaying at lek - side view. Wyoming, USA. Picture taken during filming for BBC "Life" TV Series, April 2007
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Barrie Britton / Male Sage Grouse (Centrocercus urophasianus) displaying at lek. Wyoming, USA. Picture taken during filming for BBC "Life" TV Series, April 2007
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Gerrit Vyn / Greater Sage-Grouse (Centrocercus urophasianus) head portrait of male displaying on a lek. Freemont County, Wyoming, USA, March.
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Gerrit Vyn / Greater Sage-Grouse (Centrocercus urophasianus) male displaying on a lek. Freemont County, Wyoming, USA, March.
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Gerrit Vyn / Greater Sage-Grouse (Centrocercus urophasianus) male displaying on a lek. Freemont County, Wyoming, USA, March.
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Gerrit Vyn / Adult male Greater Sage-Grouse (Centrocercus urophasianus) strutting on a lek. Freemont County, Wyoming, USA, April.
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Gerrit Vyn / Strutting male Gunnison Sage-Grouse (Centrocercus minimus). Gunnison County, Colorado, USA, April.
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Gerrit Vyn / A male Gunnison Sage Grouse (Centrocercus minimus) displaying near a female in snowy sage. Gunnsion County, Colorado, USA, April
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Carol Walker / Male Sage Grouse {Centrocercus urphasianus} courtship display, Baggs, Wyoming
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Carol Walker / Male Sage Grouse {Centrocercus urphasianus} courtship display, Baggs, Wyoming, USA.
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Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
