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Straddling the headwaters of the Minnesota River in extreme west-central Minnesota, Big Stone National Wildlife Refuge is within the heart of the tallgrass prairie's historic range. Today, less than one-percent of tallgrass prairie remains. Big Stone Refuge serves as the "keeper of the prairie" by working to maintain and restore native prairie habitat while providing optimum nesting cover for waterfowl and other grassland nesting birds. The refuge contains : 1,028 acres in Big Stone County and in Lac qui Parle County. The refuge is located in Minnesota's 7th congressional district. The primary refuge purposes stated in authorizing documents are flood control, recreation, and fish and wildlife conservation. The refuge's principal objective is to provide optimum nesting cover for ground-nesting waterfowl production. Approximately 30,000 people visit the refuge annually. ==References== *(Refuge profile ) *(website ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Big Stone National Wildlife Refuge」の詳細全文を読む スポンサード リンク
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