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Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
01557865
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
01557864
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
01557863
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
01557862
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
01557861
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
01557860
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
01557859
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying to a female at lek. Gunnison County, Colorado. April.
Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
01557858
Gerrit Vyn / Gunnison sage-grouse (Centrocercus minimus) male displaying at a lek. Gunnison County, Colorado. April.
Female Greater Sage-Grouse (Centrocercus urophasianus) visiting a lek of displaying males. Sublette County, Wyoming. April.
01557857
Gerrit Vyn / Female Greater Sage-Grouse (Centrocercus urophasianus) visiting a lek of displaying males. Sublette County, Wyoming. April.
Greater sage-grouse  (Centrocercus urophasianus) and fracking rig. Pinedale Mesa. Sublette County, Wyoming. March.
01557856
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) and fracking rig. Pinedale Mesa. Sublette County, Wyoming. March.
Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in spring at sunset, Sublette County, Wyoming. March.
01528338
Gerrit Vyn / Greater sage-grouse (Centrocercus urophasianus) male displaying on a lek in spring at sunset, Sublette County, Wyoming. March.
Newly hatched, day old Greater sage-grouse (Centrocercus urophasianus) chicks. Sublette County, Wyoming, USA. May.
01528334
Gerrit Vyn / Newly hatched, day old Greater sage-grouse (Centrocercus urophasianus) chicks. Sublette County, Wyoming, USA. May.