Endangered Species Law & Policy

On April 17, 2025, the U.S. Fish & Wildlife Service (USFWS) and National Marine Fisheries Service (NMFS) (collectively, Services) published a notice in the Federal Register proposing to rescind the Services’ respective definitions of “harm” under the Endangered Species Act (ESA) (Proposed Rule). The notice indicates the Services will accept comments on the Proposed Rule until May 18.

Section 9 of the ESA prohibits “take” of endangered species and the Services have extended the “take” prohibition, by regulation, to many species listed as threatened under the ...

On December 10, 2021, the Biden Administration released the Fall 2021 Unified Agenda of Regulatory and Deregulatory Actions (Unified Agenda), which is a semi-annual compilation of information concerning regulations and policy under development by federal agencies. Department of the Interior (DOI) entries on the Unified Agenda reveal a lengthy set of planned regulatory actions, some of which may have an impact on development and deployment of energy, construction and operation of transportation and other infrastructure, and various other economic activities. … 

In the last few weeks, the U.S. Fish and Wildlife Service (Service) has published several major regulatory actions affecting federal avian protections.  The Service has repealed a Trump-era rule that excluded incidental take from liability under the Migratory Bird Treaty Act (MBTA), issued guidance for enforcement of the MBTA against incidental take, and invited comment on a potential MBTA permitting program.  Separately, the Service has invited comment on ways to improve its existing permitting program for the incidental take of eagles (Eagle Permit Program). … 

The U.S. Fish and Wildlife Service (USFWS) has announced the next chapter in the lesser prairie chicken’s (Tympanuchus pallidicinctus) (LEPC) tumultuous listing history. On May 26, 2021 the USFWS announced that it will propose a rule to establish a Northern distinct population segment (DPS) and a Southern DPS of the LEPC.  USFWS has proposed to list the Southern DPS – consisting of portions of New Mexico and Texas – as endangered. If finalized, the ESA take prohibition would apply across the Southern DPS without exception. The USFWS proposes to list the Northern DPS ...

On September 8, 2020, the U.S. Fish and Wildlife Service (USFWS) published a proposed rule codifying procedures for excluding areas of “critical habitat” under section 4 of the Endangered Species Act (ESA). ESA section 4(b)(2) provides discretionary authority to the USFWS and National Marine Fisheries Service (NMFS), as administrators of the ESA, to exclude certain areas from critical habitat designations for species within their purview. These agencies can exclude areas from a critical habitat designation where the agencies conclude the benefits of excluding the areas ...