Contact: Matt Kales (303) 236-4576
                Sherry James (303) 289-0659

On March 17, 2007, the U.S. Fish and Wildlife Service and its partners will reintroduce wild bison to the Rocky Mountain Arsenal National Wildlife Refuge, located in Commerce City, Colorado. The reintroduction will mark the 104th birthday of the National Wildlife Refuge System, America’s premier network of lands and waters managed for fish and wildlife conservation.

Sixteen bison from the National Bison Range in Montana will be released at the Refuge to establish a pilot herd on a pasture in the northwestern portion of the site. The herd will be located on refuge land and enable the Service to monitor and evaluate the effects bison have on native short grass prairie ecology and to determine the role of bison in the management of the site. In hosting the pilot herd, the Refuge will also play a key part in advancing the Service’s national bison conservation program.

"Bison are one of our nation’s most storied animals," said Mitch King, the U.S. Fish and Wildlife Service’s Mountain-Prairie Regional Director. "The return of bison to the Rocky Mountain Arsenal National Wildlife Refuge signals remarkable progress both in the transformation of this site and in the conservation of American bison. The Service thanks our many public and private partners for their support as we work to restore this unique refuge to its full ecological potential."

In order to minimize disturbance to the bison and facilitate a safe release, the release is not open to the public. However, the Service will add the bison pasture to its popular public tram tour route beginning in April, which will enable the public to view the bison and bison habitat.

Additional public use opportunities involving bison and bison conservation will also be available in the future.

The bison pasture was once part of the Rocky Mountain Arsenal. The U.S. Army, with the assistance of Shell Oil Co., is successfully managing the remaining cleanup of this Superfund site. To date, more than 12,000 acres (two-thirds of the site) have been certified as clean by the Environmental Protection Agency and State of Colorado. Once certification was complete, the U.S. Army transferred the land to the Service, officially establishing and later expanding the Rocky Mountain Arsenal National Wildlife Refuge. Of the 12,000 acres, 1,400 are designated as bison habitat by the Service.

"The return of the American bison marks another step in bringing this land full circle back to its natural beauty," said Roger Shakely, Denver site manager for Shell Oil Co. "Bones found here show that bison roamed the land more than a thousand years ago, and visitors will now be able to see bison again in their natural habitat. We support the U.S. Fish and Wildlife Service’s commitment to conserving this species and offering those educational opportunities to the community."

The Service is coordinating with its Army and Shell partners at the Arsenal, and with regulatory agencies, local governments and other entities involved to ensure the bison reintroduction fully comply with all applicable laws, regulations and policies related to the remaining clean-up at the Arsenal and continued transformation of the site to a national wildlife refuge.

The bison identified for movement from the Bison Range to the Refuge contain valuable and unique genetic characteristics that the Service, using the best available scientific information, has determined important to the long-term conservation of wild bison. The Service is undertaking a series of bison transfers among and between national wildlife refuges in Montana, North Dakota, Colorado, Nebraska and Iowa to prevent against a catastrophic loss of key genetic material. These transfers are also intended to serve as an initial step toward establishing a more holistic management approach that recognizes and includes bison as a functional part of the National Wildlife Refuge System.

Bison were historically an integral component of the North American prairie ecosystem. Migrating bison provided essential functions, such as grazing and other disturbances that, together with fire, drove key ecological processes on the prairie. The decimation of the historic bison herds across the continent in the late 19th century removed this component from the prairie ecosystem. As the Service works to restore and conserve prairie habitats throughout the National Wildlife Refuge System, the agency has identified wild bison as a species that can and will play a vital role in this effort.

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