Captive-bred condors were first released to the wild in southern California in 1992, and since that time reintroduction efforts have been expanded. On the Colorado Plateau, condors are currently being reintroduced just north of the Grand Canyon in the Vermillion Cliffs region of southern Utah and northern Arizona. For more on the paleohistory of the California Condor and the reintroduction effort in Arizona, click here . Courtesy Arizona Game and Fish Department. The black-footed ferret was once considered the most endangered mammal in the United States, but recently progress has been made toward its recovery.
Ferrets eat prairie dogs and live in prairie dog burrows.
Where prairie dogs were found, so were ferrets. As the prairies were settled, prairie dogs competed with livestock for the available forage. Without the prairie dog, the black-footed ferret had no source of food, and populations quickly and seriously declined. The ferret was listed as an endangered species in 1967 under a law that preceded the Endangered Species Act of 1973. By 1972, the black-footed ferret was believed to be extinct.