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  1. By: Hendricks, P. - Montana Natural Heritage Program. - United States. Bureau of Land Management. - United States. Bureau of Land Management. Lewistown Field Office.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,c2000.
    Holding Institution: Montana State Library (archive.org)
    Subjects: Baird's sparrow  Bird surveys  Birds  Brewer's sparrow  Brown-headed cowbird  Counting  Fergus County  Geographical distribution  Grasshopper sparrow  Grassland birds  Lark bunting  Long-billed curlew  Montana  Musselshell River (Mont.)  Petroleum County  Ponderosa pine  Roadside transect  Sage thrasher  Sagebrush  Savannah sparrow  Short-eared owl  Sprague's pipit  Upland sandpiper  Vesper sparrow  Western meadowlark