Ninth Circuit: Gray Wolf ESA Appeals Challenge Delisting Efforts

• The Ninth Circuit is reviewing three appeals related to federal decisions to reduce protections for gray wolves, stemming from 14 underlying challenges.
• The U.S. Fish and Wildlife Service is appealing lower court rulings that blocked a delisting attempt, vacated a decision not to relist Northern Rocky Mountain wolves, and challenged the 'nonessential' designation for Mexican gray wolf habitat.
• Conservation groups argue that current wolf populations depend on Endangered Species Act protections and require nationwide recovery, while federal agencies assert sufficient recovery.
• Gray wolf populations have rebounded significantly from near extinction in the lower 48 states, now numbering over 5,000 across two main regions and emerging populations.
• The court's decisions will significantly impact the future of gray wolf management, the interpretation of the Endangered Species Act, and regulatory obligations for stakeholders in affected regions.

Lawyers advising clients on environmental compliance, land use, or conservation efforts in regions with gray wolf populations must closely monitor the Ninth Circuit's decisions, as the outcome will directly impact the scope of Endangered Species Act protections, regulatory obligations, and potential legal strategies.

The Ninth Circuit Court of Appeals is currently reviewing three significant appeals that collectively stem from 14 separate legal challenges concerning federal actions to reduce protections for gray wolves. These proceedings are unfolding as the Trump administration continues its efforts to remove the gray wolf from the federal endangered species list, a move that has faced considerable opposition from conservation groups.

Among the specific decisions under scrutiny, the U.S. Fish and Wildlife Service (USFWS) has asked the Ninth Circuit to reverse a lower court's ruling that previously blocked a 2020 attempt by the Trump administration to delist the species. Additionally, the agency is appealing the vacatur of a more recent decision where it opted not to relist gray wolves specifically within the Northern Rocky Mountain region. The USFWS is also defending its classification of Mexican gray wolf habitat in Arizona and New Mexico as “nonessential” to the subspecies' survival, a designation that has drawn criticism from environmental advocates.

Historically, gray wolf populations in the lower 48 states were nearly eradicated due to extensive government-funded killing programs, rendering them functionally extinct by 1974, with only two isolated pockets remaining in Minnesota and Michigan. The implementation of federal protection under the Endangered Species Act (ESA) marked a turning point, initiating decades of conservation and reintroduction efforts that have led to a significant rebound in wolf numbers.

Today, at least 5,000 gray wolves thrive across the United States. These populations are primarily concentrated in two main regions: approximately 4,000 wolves inhabit the Great Lakes area, while at least 1,900 reside in the northern Rocky Mountains. The Northern Rocky Mountain population was notably delisted in 2011. Furthermore, wolves have expanded their range into California and the western parts of Oregon and Washington, leading some conservationists to identify an emerging "West Coast" population. The Mexican gray wolf subspecies has also seen a remarkable recovery, growing from just seven individuals to over 300 in Arizona and New Mexico.

Central to the current gray wolf delisting litigation is a fundamental disagreement over the species' recovery status and the necessity of continued Endangered Species Act protections. Department of Justice attorney Emily Polachek asserted before a three-judge panel that no gray wolf entity is currently endangered or likely to become so in the foreseeable future. However, Kristin Boyles, representing the nonprofit conservation group Defenders of Wildlife, countered this argument, stating that such a conclusion is only possible because of the very ESA protections that federal agencies seek to remove prematurely, emphasizing the need for a nationwide recovery.

Conservationists, including Defenders of Wildlife, successfully challenged the USFWS's decision to remove federal protection for gray wolves across the lower 48 (excluding the Mexican subspecies), leading to a federal judge vacating and remanding the decision in 2022. These groups argued that the agency disproportionately focused on central populations while overlooking smaller, emerging groups like the West Coast wolves, which they contend require ESA safeguards. Polachek, however, maintained that the West Coast wolves are not a distinct entity but rather a dispersing extension of the Northern Rocky Mountain population. When U.S. Circuit Judge Daniel Bress questioned what assurances the government could offer against a repeat of 20th-century eradication if lower 48 wolves were delisted, Polachek indicated that the USFWS would monitor populations for five years and the Bureau of Land Management would classify them as a "sensitive species."

Polachek also defended the agency's denial of a petition to relist the Northern Rocky Mountain wolves, whose territory spans Montana, Idaho, Wyoming, and eastern portions of Oregon and Washington. This decision was also vacated and remanded by a federal judge in August 2025. Polachek argued that wolves in this region are no longer vulnerable to human depredation as they once were, citing the cessation of state bounties and widespread poison use. Margie Robinson, an attorney for the Center for Biological Diversity, contended that the agency failed to consider other critical factors in its assessment.

The outcomes of these Ninth Circuit wildlife protection appeals will have profound and lasting implications for the future of gray wolf management and the interpretation of the Endangered Species Act. The court's rulings will not only determine the scope of federal protections for gray wolves but also set precedents for how federal agencies define species recovery and manage populations across diverse geographic regions. This gray wolf delisting litigation is a critical test of the balance between conservation goals and state management authority.

Lawyers advising clients on environmental compliance, land use, or conservation efforts in regions with gray wolf populations must closely monitor the Ninth Circuit's decisions, as the outcome will directly impact the scope of Endangered Species Act protections, regulatory obligations, and potential legal strategies. The resolution of these US Fish and Wildlife Service appeals will shape environmental policy, influence land use planning, and affect the legal landscape for all stakeholders involved in wildlife conservation and resource management, particularly in the lower 48 states and the Northern Rockies.

Lawyers advising clients on environmental compliance, land use, or conservation efforts in regions with gray wolf populations (especially the lower 48 states and Northern Rockies) must closely monitor the Ninth Circuit's decisions, as the outcome will directly impact the scope of Endangered Species Act protections, regulatory obligations, and potential legal strategies for or against delisting.

Source: Original reporting via Courthouse News Service