Sharp-tailed Grouse Male on Lek in Fort Pierre National Grassland
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Sharp-tailed Grouse Male on Lek in Fort Pierre National Grassland
Sharp-tailed Grouse, Tympanuchus phasianellus, male dancing on a lek, often showing its violet air sacs and rattling its tail, on a lek located in the short grass prairie within Fort Pierre National Grassland, South Dakota, USA