II. Keeping the Wolves at the Door: How the ESA Helped the Wolf Recover
A. Listing of the Gray Wolf
At the behest of President Richard Nixon and mounting pressure for environmental action, the ESA was signed into law. Congress stated that the purpose of the ESA was to provide a means whereby the ecosystems upon which endangered species and threatened species depend may be conserved and to provide a program for the conservation of such endangered species and threatened species. To that end, Congress declared that conservation of endangered species and threatened species is the policy of Congress and all federal departments and agencies.
In 1974 the eastern timber wolf (Canis lupus lycaon), the northern Rocky Mountain wolf (Canis lupus irremotus), and the red wolf (Canis rufus), were listed as endangered in the lower 48 states and Mexico. In 1978, the U.S. Fish and Wildlife Service (FWS) revised its prior list, replacing the various subspecies of wolf with the entirety of the gray wolf species. This revision also altered the status of the gray wolf to be endangered in all lower 48 states except Minnesota, where the gray wolf was listed as threatened.
B. “Recovery” of the Gray Wolf
Recovery under the ESA is not defined by statute. Instead, the ESA provides the FWS the authority to create recovery plans to conserve species. These plans are required to have a description of site-specific management actions to conserve the species, objective criteria to determine whether the species should be removed from the list, and estimates of the time required and the cost to carry out those measures.
The FWS prepared a Recovery Plan for the Eastern Timber Wolf in 1978 (the Plan), which was revised and finalized in 1992. The Plan determined that the gray wolf population would be recovered when the survival of the wolf in Minnesota was assured and at least one viable population outside of Minnesota and Isle Royale in the contiguous 48 states was established. When the Plan was passed, there were approximately 1,550 to 1,750 wolves in Minnesota, 45 to 60 wolves in northern Wisconsin and the Upper Peninsula of Michigan, and an additional 13 or 14 wolves in Isle Royale National Park, Michigan.
The Plan provided two requirements for the gray wolf: (1) large tracts of wild land with low human densities and minimal accessibility by humans; and (2) the availability of adequate wild prey, largely ungulates and beaver. The Plan claims that there was sufficient suitable habitat in Minnesota, Wisconsin, and Michigan to achieve these criteria.
In 1994, the FWS established an “experimental population” of gray wolves in Yellowstone National Park, primarily in Idaho, Montana, and Wyoming. This created a second distinct population segment (DPS) of gray wolves and allowed the animal to begin recovering from its destruction.
By the time of the most recent delisting of the gray wolf in January 2021, the FWS estimated approximately 6,100 gray wolves in the continental United States across two large population sectors, which includes 4,200 gray wolves in the Great Lakes area and approximately 1,900 gray wolves in the Western United States.