The U.S. Fish and Wildlife Service and National Marine Fisheries Service recently published three proposed rules that would make major revisions to the regulations implementing portions of the Endangered Species Act. The proposed rules would change the criteria and procedures for (1) establishing protections for “threatened” species; (2) the listing and delisting of species and
Endangered Species
Department of Interior Declares That Only Deliberate Acts Constitute Take of Migratory Birds
The U.S. Department of the Interior’s Office of the Solicitor has issued Memorandum M-37050, dated December 22, 2017, which concludes that the Migratory Bird Treaty Act’s prohibition on the “taking” or “killing” of migratory birds applies only to deliberate acts, such as hunting, intended to take a migratory bird. The legal opinion reverses the…
Ninth Circuit Upholds Biological Opinion for Silver State South Solar Project in Nevada
In Defenders of Wildlife v. Zinke, the Ninth Circuit upheld the Biological Opinion prepared by the U.S. Fish & Wildlife Service to assess the impacts on the threatened desert tortoise from the Silver State South solar project in southern Nevada. 856 F.3d 1248 (9th Cir. 2017). A key takeaway from the decision is the substantial deference that the courts give to the scientific judgments of the FWS, especially in the face of scientific uncertainty.
The Biological Opinion
The principal issue in the case was that the project, which required approval by the Bureau of Land Management of a right-of-way over federal land, would narrow the corridor for the movement of the desert tortoise through the Ivanpah Valley in southern Nevada, although the project and the affected corridor were located outside of the species’ designated critical habitat. The Biological Opinion recognized that the project’s impact on the “connectivity” of the tortoise’s movement through the Valley was uncertain in light of the available data. But it found that the corridor provided for the species’ movement was likely to be sufficiently wide and it included a monitoring program that would be used to develop conservation measures to identify and address any negative impacts if they did occur.
In accordance with the procedures for “formal consultation” under the Endangered Species Act, the Biological Opinion made a “no jeopardy” finding, which determined that the project would not jeopardize the continued existence of the tortoise. The Biological Opinion further concluded that formal consultation was not required to assess the potential modifications to the critical habitat for the tortoise, and instead relied on the more summary process of “informal consultation” to find that the project was not likely to affect this habitat.
Based on the Biological Opinion, in 2014 the BLM approved the federal right-of-way for the project.
The Ninth Circuit’s Decision
In upholding the Biological Opinion, the Ninth Circuit first rejected the plaintiff’s claim that the FWS did not adequately specify the applicable mitigation measures to support the “no jeopardy” finding. The court reasoned that nothing in the ESA required firm, binding mitigation to address negative effects that are uncertain to occur. The court explained that “our precedents do not require mitigation measures to be identified or guaranteed when the mitigation measures themselves may be unnecessary.”
The court further explained that, while a Biological Opinion must use the best scientific data that is available, the court was required to defer to the FWS in the face of scientific uncertainty. As the court cautioned, “it is not our job to task the FWS with filling the gaps in the scientific evidence” and “we must respect the agency’s judgment.” The court quoted the district court’s finding that “the FWS cannot be expected to respond to data that is not yet available to surmise potential mitigation actions that are not needed under the agency’s current interpretation of the data.”…
Continue Reading Ninth Circuit Upholds Biological Opinion for Silver State South Solar Project in Nevada
Delisting petition may challenge original listing of endangered species based upon new evidence
The California Supreme Court has ruled that, under the California Endangered Species Act, a plaintiff may use a delisting petition to challenge the original decision by the California Fish and Game Commission to list an endangered species—even in the absence of changes occurring after the original listing of the species. Central Coast Forest Association v. …
U.S. Fish & Wildlife Service Adopts 30-Year Eagle Take Rule
As we previously reported, in August 2015, a federal court nullified the U.S. Fish and Wildlife Service’s rule increasing the length of programmatic permits to “take” bald and golden eagles to 30 years. The court held that the Service was required to prepare an Environmental Impact Statement or Environmental Assessment before adopting the rule.…
Fish and Wildlife Service Agrees to Deadline for Monarch Butterfly Listing Decision
The U.S. Fish and Wildlife Service has agreed to decide by June 30, 2019, whether to list the monarch butterfly under the Endangered Species Act. The agreement is part of a settlement of a lawsuit by the Center for Biological Diversity and Center for Food Safety that sought to obtain a legally binding deadline for…
How Developers Can Help Save the Monarch Butterfly (and Why They Should)
The monarch butterfly is heading quickly towards extinction for a simple reason: it does not have enough food to eat on its migration path.

Every fourth generation of this remarkable creature undertakes a migration of up to 3,000 miles…
Ninth Circuit Upholds BLM’s Approval of Renewable Wind Energy Project
On the heels of a decision nullifying the Bureau of Land Management’s approval of a wind energy project under the National Environmental Policy Act (reported on here), the Ninth Circuit rejected a challenge to BLM approval of another wind turbine project, finding it consistent with NEPA, the Migratory Bird Treaty Act and the Bald…
Fish and Wildlife Service Reissues 30-Year Eagle Take Rule
As we previously reported, in August 2015, a U.S. District Court in San Francisco nullified the U.S. Fish and Wildlife Service’s new rule increasing the length of programmatic permits to “take” bald and golden eagles from 5 years to 30 years. Shearwater v. Ashe, No.14-CV-02830-LHK (N. Dist. Ca, Aug. 11, 2015). In…
Complex New Requirements for CEQA Analysis of Greenhouse Gas Emissions Set by Supreme Court
Newhall Ranch, a proposed mega-development in Los Angeles County, can’t seem to catch a break: besieged by setbacks since Newhall Land first filed an application to develop the land in 1994, the project has been the subject of over twenty-one public hearings and several law suits over its more than twenty year history. In Center …