Features
Bison
Enjoy views of North America's largest existing mammal, the bison. The refuge's herd includes approximately 650 of these herbivores.
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Geology
The refuge's rugged landscape is the result of over half a billion years of geologic change and adaptation.
Rugged ranges
About the NWRS
The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.
Learn more about the NWRS
Starting August 1, 2016, as weather permits.
Prescribed FireYour inquiries have been heard and we are pleased to announce the Division of Refuge Law Enforcement, National Wildlife Refuge System Turn In Poachers, or TIPs, hotline.
Law EnforcementA schedule of this year's Tours is available.
Tour schedule
Their songs are derived from a large syllable repertoire, an order of magnitude greater than that of other vireos.
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Page Photo Credits — All photos courtesy of USFWS unless otherwise noted., Bison on spring grass / Randy Jones
Last Updated: Sep 15, 2016