Endangered Species Law & Policy

On March 29, 2025, the U.S. District Court for the Western District of Texas (District Court) vacated the Endangered Species Act (ESA) special 4(d) rule for the northern distinct population segment (DPS) of the lesser prairie-chicken (LEPC). The 4(d) rule had prohibited, in most circumstances, “take” of the species’ northern DPS. Plaintiffs challenged the 4(d) rule in a number of ways, including on grounds that the U.S. Fish and Wildlife Service (Service) should have considered the economic impact of the 4(d) rule prior to its promulgation. As a result of the vacatur, it ...

On January 20, 2025, President Trump issued Executive Order 14154, “Unleashing American Energy,” which requires all agencies to identify actions that potentially burden deployment of domestic energy resources and develop plans to revise, rescind, and suspend any such actions (Executive Order). On February 3, 2025, Secretary of the Interior, Doug Burgum (Secretary), issued Secretarial Order 3418, “Unleashing American Energy” (Secretarial Order), which provides 15 days for agencies within the Department of the Interior to submit a plan on how they will comply with the Executive Order. … 

On January 20, 2025, the U.S. Fish & Wildlife Service (Service) will publish a positive 90-day finding on a 2016 petition (Petition) to delist the golden-cheeked warbler (Setophaga chrysoparia) (GCWA). The decision comes on the heels of the agency’s recent recommendation to downlist the GCWA from endangered to threatened. Pursuant to Endangered Species Act section 4 and relevant implementing regulations, the Service will receive information from the public to inform a more detailed status review, and will publish a 12-month finding in which the agency will make a final ...

On January 7, 2025, the U.S. Fish & Wildlife Service (Service) announced that, following the completion of the Service’s 5-year status review (5-year Review) of the golden-cheeked warbler (Setophaga chrysopharia) (GCWA), the agency is recommending the species be downlisted from endangered to threatened under the Endangered Species Act (ESA). The species will remain listed as endangered unless and until the species is formally downlisted under the ESA pursuant to the necessary rulemaking process.

Citing better understanding of the GCWA and its habitat needs, along with ...

On December 10, 2024, the U.S. Fish and Wildlife Service (Service) released its long-anticipated listing proposal for the monarch butterfly (Danaus plexippus), along with a proposed critical habitat designation and species-specific 4(d) rule (Proposed Rule). The Proposed Rule indicates the public comment period closes on March 12, 2025.

The Service has proposed listing the monarch as threatened primarily as a result of threats from past and ongoing loss and degradation of breeding, migratory, and overwintering habitat, exposure to insecticides, and the effects of climate ...

Today, the U.S. Fish and Wildlife Service (Service) announced it had opened status reviews for 38 species of plants, wildlife, and fish endemic to Texas, New Mexico and Arizona (Southwest Species). Section 4(c) of the Endangered Species Act (ESA) requires the Service to evaluate the status of species listed as threatened and endangered at least once every five years (5-year Review) and determine, based on that evaluation, whether any such species should be delisted, downlisted (from endangered to threatened), … 

On Wednesday, October 23, 2024, the U.S. Fish and Wildlife Service (Service) released final guidance and tools (Final Guidance) to assist project proponents with Endangered Species Act (ESA) compliance with respect to the northern long-eared bat (Myotis septentrionalis) (NLEB) and the tricolored bat (Perimyotis subflavus) (TCB). The Final Guidance includes: (1) a step-by-step consultation guidance document which outlines a voluntary approach to streamline ESA section 7 consultation for the NLEB and/or TCB for project types other than wind turbine operation and ...

On September 17, 2024, the U.S. Fish and Wildlife Service (Service) proposed listing the Kentucky creekshell (Villosa ortmanni) as an endangered species under the Endangered Species Act (ESA) and designating critical habitat for the species (Proposed Rule). The freshwater mussel is found in rivers and streams in both Kentucky and Tennessee. Historically, the species was found in thirteen river basins in southern Kentucky and northern Tennessee, but it has been extirpated from four of those basins.

The Proposed Rule identifies water quality degradation, urbanization ...

On September 5, 2024, the U.S. District Court for the Western District of Texas held in General Land Office v. U.S. Department of the Interior, that the U.S. Fish and Wildlife Service (Service) improperly denied a petition to delist the federally-endangered golden-cheeked warbler (Setophaga chrysoparia) (GCWA) by holding the petition to an unlawfully heightened standard at the initial, 90-day finding stage. As a result of the court’s ruling, the Service is required to undertake a review of the GCWA delisting petition and make a 90-day finding as to whether the petition presents ...

On June 27, 2024, the U.S. Fish and Wildlife Service (Service) issued a final rule listing the Suwannee alligator snapping turtle (Macrochelids suwanniensis) as a threatened species with a 4(d) rule under the Endangered Species Act (ESA).

The Suwannee alligator snapping turtle is a large, freshwater turtle species occurring in the Suwannee River basin in Florida and Georgia. The species’ listing follows a 2012 petition filed by the Center for Biological Diversity to list 53 amphibians and reptiles, including the alligator snapping turtle (Macrochelys temminckii), which, due ...

On May 20, 2024, the U.S. Fish and Wildlife Service (Service) published a final rule listing the dunes sagebrush lizard (Scleroperus arenicolus) (DSL) as endangered (Final Rule) under the Endangered Species Act (ESA). In the Final Rule, the Service identifies habitat loss and fragmentation of dunelands associated with oil and natural gas production and frac sand mining as the primary threat to the species, with climate change causing additional impacts.

The Service received more than 18,000 comments on its proposed rule to list the DSL, with many urging the Service not to list the ...

Today, the U.S. Fish and Wildlife Service (Service) and Center for Biological Diversity entered into a settlement agreement wherein the Service agreed to submit to the Federal Register final listing decisions on the following six mussel species no later than May 23, 2024:

• Texas fatmucket (Lampsilis bracteate);
• Guadalupe fatmucket (Lampsilis bergmanni);
• Texas fawnsfoot (Truncilla macrodon);
• Texas pimpleback (Cyclonaias (= Quadrula) petrina);
• Guadalupe orb (Cyclonaias necki); and
• False spike (Fusconaia (= Quincuncina) mitchelli).

As Nossaman previously reported, on ...

On March 27, 2024, the U.S. Fish and Wildlife Service (USFWS) and National Marine Fisheries Service (NMFS) (collectively, the Services) made available pre-publication versions of the agencies’ long-awaited updates to regulations implementing sections 4 and 7 of the Endangered Species Act (ESA). The Services have finalized joint rules addressing interagency consultation requirements under ESA section 7 and the procedures for listing, reclassifying, delisting, and designating critical habitat for species under ESA section 4; and USFWS has finalized its reinstatement of ...

On February 28, 2024, the U.S. District Court for the District of Columbia upheld the U.S. Fish and Wildlife Service’s (Service) denial of a petition filed by the New Mexico Cattle Growers’ Association (Cattle Growers) urging the Service to remove the southwestern willow flycatcher (Empidonax traillii extimus) (flycatcher) from the list of endangered species (Petition). The Cattle Growers had argued that the Service’s denial of the Petition, and specifically the agency’s finding that the flycatcher is a valid subspecies of the unlisted willow flycatcher, violated the ...

On March 5, 2024, the Center for Biological Diversity and several other groups submitted a petition to the California Fish and Game Commission (the Commission) to list the western burrowing owl (Athene cunicularia hypugaea) as endangered or threatened pursuant to the California Endangered Species Act. The petition identifies five separate populations (or evolutionarily significant units (ESUs)) of burrowing owls and petitions to list three as endangered and two as threatened. Alternatively, the petition requests that the Commission consider either (i) listing a greater ...

On February 1, 2024, the Center for Biological Diversity (CBD) filed an amended complaint (Complaint) in the U.S. District Court of Arizona, alleging the U.S. Fish and Wildlife Service (Service) failed to timely analyze the harmful effects of six pesticides on species listed under the Endangered Species Act (ESA) and their habitats. The lawsuit stems from the Service’s failure to issue biological opinions to the Environmental Protection Agency (EPA) in response to that agency’s request for formal ESA section 7 consultation with the Service over the EPA’s 2017 and 2021 ...

On December 21, 2023, I published a post on the Center for California Water Resources Policy and Management’s DeltaCurrents blog discussing integration of resource optimization into endangered species policy to improve conservation outcomes. Resource optimization is the allocation of finite resources in the most efficient manner possible. In the context of wildlife management, it is a structured process to select a management action from among available alternatives intended to result in the most efficient allocation of resources to achieve a specified objective. … 

As previously reported, on December 6, the Biden Administration published the Fall 2023 Unified Agenda of Regulatory and Deregulatory Actions (Unified Agenda), outlining the various regulatory and deregulatory actions the Biden Administration plans to take in the near future. Among the Unified Agenda entries are numerous U.S. Fish and Wildlife Service (Service) actions to propose or finalize endangered and threatened species listings and critical habitat designations under the Endangered Species Act (ESA). Below is a sampling of potential species listings and critical ...

As we have previously reported, on December 6, the Biden Administration released the Fall 2023 Unified Agenda of Regulatory and Deregulatory Actions (Unified Agenda). The Unified Agenda, published twice a year, lists the upcoming rulemakings, policies, notices, revisions, and other actions that federal executive agencies plan to complete over the next several months. This most recent iteration of the Unified Agenda is notable in that it represents the slate of actions the Biden Administration hopes to complete in advance of a potential change in administrations … 

As we have previously reported, on December 6, the Biden Administration released the Fall 2023 Unified Agenda of Regulatory and Deregulatory Actions (Unified Agenda), which lists the regulatory and deregulatory actions that federal administrative agencies—including the U.S. Fish and Wildlife Service (Service)—plan to take in the coming year. According to the Unified Agenda, the western United States can expect a number of proposed and final rules to list species as threatened or endangered under the Endangered Species Act (ESA) and to designate critical habitat ...

On December 6, the Biden Administration released the Fall 2023 Unified Agenda of Regulatory and Deregulatory Actions (Unified Agenda), which lists the regulatory and deregulatory actions the various federal administrative agencies—including the U.S. Fish and Wildlife Service (Service)—plan to take in the near future. The Office of Information and Regulatory Affairs publishes an updated Unified Agenda twice a year, in the spring and fall. There are numerous entries in the Unified Agenda addressing future action by the Service to list species as threatened or endangered ...

On November 30, 2023, the U.S. Fish and Wildlife Service (Service) published a final rule listing a distinct population segment (DPS) of the North American wolverine (Gulo gulo luscas) as a threatened species under the Endangered Species Act (ESA). The wolverine is a medium-sized carnivore found in Alaska, Canada and the western-northwestern United States. The current listing is limited to the DPS of wolverine occurring in the contiguous United States. In the Federal Register notice … 

On October 31, 2023, the U.S. Fish and Wildlife Service (Service) proposed listing the oblong rocksnail (Leptoxis compacta) as an endangered species under the Endangered Species Act (ESA). The freshwater snail exists only in the Cahaba River in central Alabama and subsists on algae growing on the riverbed. The oblong rocksnail was declared extinct in 2000 after several decades without a confirmed specimen observation and multiple river surveys. In 2011, a population was discovered which inhabits a 5.6 river mile stretch of the Cahaba River about 10 miles south of Birmingham ...

On September 30, 2023, the U.S. District Court for the District of Columbia granted summary judgment in favor of the U.S. Fish and Wildlife Service (Service) in a case challenging the agency’s final rule downlisting the American burying beetle (Nicrophorus americanus) to “threatened species” status under the Endangered Species Act (ESA).

In its opinion, the court held that the Service adhered to a reasonable interpretation of the ESA and followed proper procedures when deciding to downlist the American burying beetle to threatened status despite noting climate change ...

On October 3, 2023, the U.S. Fish and Wildlife Service (Service) published two proposed rules to list three species—the northwestern pond turtle (Actinemys marmorata), the southwestern pond turtle (Actinemys pallida), and the short-tailed snake (Lampropeltis extenuata)—as threatened under the Endangered Species Act (ESA). The proposed listings also include proposed 4(d) rules for each species. However, according to the Federal Register notices, the Service concluded that designating critical habitat for each of the three species is not currently determinable, and ...

I recently authored an article for Law360 on the impact of SB 147, which was signed into law by California Gov. Gavin Newsom on July 10, 2023, and amends California's "fully protected species" statutes. These laws were enacted in 1970, and currently protect 37 species native to California, ranging from the massive North Pacific right whale to the diminutive salt marsh harvest mouse.

The amendments create a temporary, 10-year permitting regime that allows proponents of a limited, defined set of projects to pursue authorization from the California Department of Fish and Wildlife ...

On August 29, 2023, the U.S. Fish and Wildlife Service (Service) published a final rule listing two distinct population segments (DPS)—the North Feather and Central Coast DPSs—of the foothill yellow-legged frog (Rana boylii) (Frog) as threatened (Threatened DPSs) and two additional DPSs of the Frog—the South Sierra and South Coast DPSs—as endangered (Endangered DPSs) under the Endangered Species Act (ESA). In the preamble to the final rule, the Service indicated that designating critical habitat for all four DPSs of the Frog is not determinable at this time due to a lack ...

On August 10, 2023, the U.S. Fish and Wildlife Service (Service) issued a proposed rule to designate critical habitat for the Sacramento Mountains checkerspot butterfly (Euphydryas Anicia cloudcrofti) under the Endangered Species Act. The proposed critical habitat designation encompasses 1,636.9 acres of land in the Sacramento Mountains in Otero County, New Mexico, and follows the Service’s January 2023 final rule listing the species as endangered.

As explained in the proposed rule, the Service considered physical and biological features “essential to the ...

On July 25, 2023, the U.S. Fish and Wildlife Service (Service) published a proposed rule to list two mussel species, the Salina mucket (Potamilus metnecktayi) and Mexican fawnsfoot (Truncilla cognata), as endangered under the Endangered Species Act (ESA). The Service also proposed to designate critical habitat for these species under the ESA. The proposed critical habitat for the Salina mucket would amount to approximately 200 river miles in the Texan counties of Brewester, Terrell, and Val Verde, and the proposed critical habitat for the Mexican fawnsfoot would amount to ...

On July 20, 2023, the U.S. Fish and Wildlife Service (Service) issued a final rule listing the cactus ferruginous pygmy-owl (Glaucidium brasilianum cactorum) (“Owl”) as a threatened subspecies with a 4(d) rule under the Endangered Species Act (ESA). The 4(d) rule prohibits the same activities prohibited for endangered species, but allows exemptions for certain education and outreach activities permitted under a Migratory Bird Treaty Act permit, surveying and monitoring in Arizona under a state scientific activity permit, and habitat restoration and enhancement ...

On July 10, 2023, Governor Newsom signed Senate Bill 147 (SB147) into law, amending California’s “fully protected species” statutes. These laws were enacted in 1970 and currently protect 37 species native to California, ranging from the North Pacific right whale (Eubalaena japonica) to the salt marsh harvest mouse (Reithrodontomys raviventris). The amendments enacted by the legislature and signed into law by the Governor create a temporary, 10-year permitting regime that allows proponents of a limited, defined set of projects to pursue authorization from the ...

On June 22, 2023, the U.S. Fish and Wildlife Service (USFWS) and National Marine Fisheries Service (NMFS) (collectively, the Services), issued three sets of proposed revisions to their Endangered Species Act (ESA) regulations addressing: (1) interagency consultations under ESA section 7; (2) the procedures and criteria for listing, reclassifying, delisting, and designating critical habitat for species under ESA section 4; and (3) reinstatement of USFWS’s blanket ESA section 4(d) rule which, prior to its repeal in 2019, extended the take prohibitions of ESA section 9 to all ...

On May 17, 2023, the federal District Court for the District of Massachusetts granted summary judgment in favor of the United States Bureau of Ocean Energy Management (BOEM) and Vineyard Wind and denied summary judgment to the plaintiffs in the case of Nantucket Residents Against Turbines v. U.S. Bureau of Ocean Energy Management, 21-cv-11390 (Talwani, J.). This is the first federal court decision upholding, on the merits, the federal government’s approval of a commercial-scale offshore wind project. There are three other cases pending that also seek to block the construction ...

This month, the United States Fish and Wildlife Service (Service) published the latest update to its National Listing Workplan (Workplan). This update to the Workplan is the Service’s latest since March 2022 and projects the anticipated timeline for the agency’s listing-related decisions over the next five years (2023-2027). In general, the Workplan estimates the Service’s publication dates for various findings and publications, including but not limited to 12-month findings, species status reviews, proposed listing determinations and critical habitat ...

On April 11, 2023, the U.S. Fish and Wildlife Service (Service) issued a final rule listing the bracted twistflower (Streptanthus bracteatus), a wildflower native to Texas, as threatened with a rule issued under section 4(d) of the Endangered Species Act (ESA). The Service also finalized a critical habitat designation for the species spanning approximately 1,596 acres in the Texas counties of Uvalde, Medina, Bexar, and Travis. The critical habitat designation consists of almost entirely public land, with the exception of approximately 63 acres of privately owned land (however ...

On April 3, the U.S. Fish and Wildlife Service (Service) rejected a petition filed by a group of environmental organizations under section 4(e) of the Endangered Species Act (ESA) to list the coyote (Canis latrans) as an endangered species due to its similarity of appearance to the endangered Mexican wolf (C. lupus baileyi). Section 4(e) of the ESA gives the Service the ability to list a species on the basis that its “similarity of appearance” to an endangered or threatened species imperils the protected species’ survival and recovery.

In the petition, the environmental ...

Last week, the U.S. District Court for the District of Columbia issued a ruling allowing the Center for Biological Diversity (CBD) to continue pursuing its large Endangered Species Act (ESA) lawsuit against the U.S. Fish and Wildlife Service (Service) and the Department of the Interior.

The underlying lawsuit, filed in 2019, alleges that the Service violated the ESA by failing to timely publish 12-month findings on nearly 200 listing petitions, final listing determinations for six species, and designations of critical habitat for four species.  In response, the Service filed a ...

On March 9, the U.S. Fish and Wildlife Service (Service) issued its 12-month finding that listing Joshua trees (Yucca brevifolia and Y. jaegeriana) as endangered or threatened species under the Endangered Species Act (ESA) is not warranted. The 12-month finding was made to comply with a September 20, 2021 court-ordered remand of the Service’s previous “not warranted” finding in August 2019.

In September 2015, WildEarth Guardians submitted a petition to list the Joshua trees as threatened and, if applicable, designate critical habitat for the species. The Service issued ...

On February 28, 2023, I published a post on the Center for California Water Resources Policy and Management’s DeltaCurrents blog discussing Species Status Assessments (SSAs) as a tool to facilitate implementation of the federal Endangered Species Act (ESA). The U.S. Fish and Wildlife Service (Service) describes the SSA framework as “an analytical approach developed . . . to deliver foundational science for informing all [ESA] decisions.” The Service has explained it intends SSAs to provide “focused, repeatable, and rigorous scientific assessment” that results in ...

On February 23, the U.S. Fish and Wildlife Service (Service) issued a proposed rule to list two distinct population segments (DPSs) of the California spotted owl (Strix occidentalis) as endangered and threatened species under the Endangered Species Act (ESA). The two DPSs are the Coastal-Southern California DPS, which the Service proposes to list as endangered, and the Sierra Nevada DPS, which the Service proposes to list as threatened with a rule issued under section 4(d) of the ESA (4(d) rule). The proposed rule also serves as the Service’s 12-month finding on a petition to list ...

On January 24, 2023, the U.S. Fish and Wildlife Service (Service) proposed to designate approximately 104 river miles as critical habitat for the sickle darter (Percina williamsi) under the Endangered Species Act (ESA). The critical habitat designation would be divided into six areas—Little River, Emory River and Rock Creek, Copper Creek, North Fork Holston River, Middle Fork Holston River, and Sequatchie River—which together span Bledsoe, Blount, Morgan, and Roane Counties in Tennessee, and Scott, Smyth, and Washington Counties in Virginia. Nearly 80 percent of the ...

On November 30, 2022, the U.S. Fish and Wildlife Service (Service) issued a final rule listing the northern long-eared bat (NLEB) (Myotis septentrionalis) as an endangered species under Section 4 of the Endangered Species Act (ESA), reclassifying it from its former threatened status and rescinding its section 4(d) rule. In determining whether to list the NLEB, the Service looked to factor C of ESA section 4, which requires the Service to make a listing determination if “disease or predation” poses a threat to the species. The Service cited the impacts of white nose syndrome (WNS ...

On November 16, 2022, the U.S. District Court for the Northern District of California (District Court) remanded three sets of Endangered Species Act (ESA) regulations promulgated in 2019 under the Trump administration back to the U.S. Fish and Wildlife Service (USFWS) and National Marine Fisheries Service (NMFS) (collectively, Services) for reconsideration. The three regulations addressed: how species are listed and delisted and critical habitat designated under ESA section 4; interagency consultation under ESA section 7; and a final rule repealing USFWS’s blanket ESA ...

On October 25, 2022, the Center for Biological Diversity (CBD) sued the U.S. Fish and Wildlife Service (Service) over the agency’s failure to timely finalize a proposed rule to list the lesser prairie-chicken (Tympanuchus pallidicinctus) (LEPC). CBD seeks an order from the court declaring the Service is in violation of the Endangered Species Act (ESA) by failing to timely list the LEPC and requiring the Service to publish one or more final rules by a date certain.

On June 1, 2021, and in response to a 2016 petition to list the LEPC, the Service proposed to list two distinct population ...

On October 18, 2022, the U.S. Fish and Wildlife Service (Service) announced 12-month findings on a petition to list three California-based salamander species under the Endangered Species Act (ESA): the Kern Plateau salamander (Batrachoseps robustus), the Kern Canyon slender salamander (Batrachoseps simatus), and the relictual slender salamander (Batrachoseps relictus). All three salamander species occur in the southern Sierra Nevada Mountains in California. The Service determined that listing the Kern Canyon slender salamander and the relictual slender salamander is ...

Today, the U.S. Fish and Wildlife Service (Service) proposed to list two snake species, the Key ring-necked snake (Diadophis punctatus acricus) and the rim rock crowned snake (Tantilla oolitica), as endangered under the Endangered Species Act (ESA). The Service also proposed to designate critical habitat for these nonvenomous snakes, including approximately 2,604 acres in Monroe County and approximately 5,972 acres in Miami-Dade County and Monroe County, Florida for the Key ring-necked snake and rim rock crowned snake, respectively. The proposal comes as a result of a ...

On September 14, 2022, the U.S. Fish and Wildlife Service (Service) published a proposed rule to list the tricolored bat (Perimyotis subflavus) (TRBA) as an endangered species under the Endangered Species Act (ESA). The TRBA is known to occur in all or portions of 39 states across the northeast, as far south as southern Texas and Florida and as far west as Wyoming. Similar to the proposed rule to list the northern long-eared bat as endangered published earlier this year, the proposed rule cites white nose syndrome as the primary threat to the TRBA, but notes other factors influence the ...

On August 25, 2022, the U.S. Fish and Wildlife Service (Service) filed a stipulated settlement agreement (Agreement) in a case challenging the agency’s failure to timely make a 12-month finding on a petition to list the dunes sagebrush lizard (Scleroperus arenicolus) (Petition). Under the Agreement, the Service will submit a 12-month finding on the Petition to the Federal Register no later than June 29, 2023. The 12-month finding will determine whether listing the species is warranted (and will simultaneously issue a proposed rule to list the species), whether listing the ...

On August 23, 2022, the U.S. Fish and Wildlife Service (Service) issued a notice in response to petitions seeking to list, delist, or revise the critical habitat of four species under the Endangered Species Act (ESA). The Service found the petitions to list the Fish Lake Valley tui chub (Siphateles bicolor ssp. 4) and to delist the southern sea otter (Enhydra lutris nereis) “present substantial scientific or commercial information indicating that the petitioned actions may be warranted,” and are therefore initiating status reviews to determine whether to list and delist the species, respectively. …

For the magnificent ramshorn (Planorbella magnifica), a fresh-water snail species native to southeastern North Carolina, efforts to secure protection under the federal Endangered Species Act have progressed at a snail’s pace. Today, twelve years after environmentalists originally petitioned the U.S. Fish and Wildlife Service (Service) to list the species, the Service proposed to list the magnificent ramshorn as endangered, and to designate two ponds spanning 739 acres as critical habitat for the species. The proposed rule was prompted by a lawsuit filed by the Center of ...