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Species Assessment for Sage Thrasher (Oreoscoptes Montanus) in Wyoming


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The sage thrasher (Oreoscoptes montanus), a sagebrush-steppe obligate that relies on large expanses of sagebrush-steppe for successful breeding, is recognized by Canada and several U.S. state agencies as a sensitive species that is apparently at risk based on loss or alteration of breeding habitat and decreasing population trends. In this context, habitat alteration refers to modification of any component of the required habitat mosaic, (e.g., presence and quality of tall big sagebrush (Artemesia spp.), adequate cover, and increased vertical and horizontal heterogeneity) that might directly decrease suitability for nesting habitat. Primary threats to O. montanus habitat are agricultural field cultivation, domestic grazing, [...]


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WyNDD_2004_Sage_Thrasher_Assessment.pdf 2.34 MB


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ScienceBase WMS


  • Wyoming Landscape Conservation Initiative


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