In May 2010, the Service announced it has denied a petition, filed pursuant to the Administrative Procedures Act, to reclassify three black-footed ferret populations under the Endangered Species Act .
In December 2008, the Service reintroduced black-footed ferrets to Logan County, Kansas. The primary objections of the proposed action are to experiment with reintroduction of ferrets into much smaller prairie dog colonies than has traditionally been attempted; and to attempt to establish a self-sustaining population outside the known active occurrence of sylvatic plaque.
On July 2005, the Service initiated a 5-year review for black-footed ferrets and pallid sturgeon.
In September 2002, the Service proposed to reintroduce black-footed ferrets, to Tribal Trust lands in South Dakota, under a reintroduction effort being considered by the Service in partnership with the Rosebud Sioux Tribe, the Bureau of Indian Affairs and the U.S. Forest Service.
In October 2001, more than two dozen endangered black-footed ferrets from Arizona, Wyoming, and Ontario, Canada, made wildlife conservation history by being the first of their species to return to Mexico.
In November 2001, more than three dozen black-footed ferrets were be released along the Wolf Creek and Coyote Basin areas in northwest Colorado. The effort will mark the ninth wild release of the species since recovery operations began in the mid-1980s. It is the first release of black-footed ferrets in Colorado.