Sage grouse populations in Wyoming.

Authors(s): S. Anderson, J. Lawson, R. Straw and M. Holloran

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Publication Date: 0000-00-00

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Abstract: Western sage grouse populations have declined over the past 20 years. The exact cause for the decline is not known. In an attempt to determine reasons for the decline, the Unit is working with the WGFD to evaluate habitat use by the birds statewide. Data on hunter-caused mortality, predators, and grazing impacts are also being correlated. Seasonal habitat use and mortality data has been quantified on populations near Farson, Rawlins, Casper and Pinedale, Wyoming. The study will be expanded to a population near Jackson Hole in the spring of 1999. Nesting and early brood-rearing habitat appears to be limiting grouse productivity. The vegetative data collected at nest sites throughout the state will be used to construct a statistical based model to evaluate potential nesting habitat state and region-wide. The study in Jackson Hole will attempt to identify early brood-rearing habitat deficiencies.

Keywords: animal, bird, ornithology, Aves, population, sage grouse, grouse, Centrocercus uraphasianus, mortality, predation, human activity, hunting, habitat, nest, nesting, Pinedale, Jackson Hole, Teton County