Endangered Species Law & Policy

On April 16, 2026, the California Fish and Game Commission voted unanimously to designate Bendire’s thrasher (Toxostoma bendirei) and LeConte’s thrasher (Toxostoma lecontei) as candidate species under the California Endangered Species Act (CESA). Candidate status triggers full CESA protections while the California Department of Fish and Wildlife (CDFW) completes a status review and the Commission considers whether to formally list the species as threatened or endangered.

This post summarizes the legal effect of the Commission’s decision, the procedural posture of ...

On Tuesday, September 26, President Biden vetoed two Republican-sponsored joint resolutions, S.J. Res. 9 and S.J. Res. 24, seeking to undo Endangered Species Act (ESA) protections for the lesser prairie-chicken (LEPC) (Tympanuchus pallidicinctus) and northern long-eared bat (NLEB) (Myotis septentrionalis) that became effective in January 2023.

S.J. Res. 9 would have undone the U.S. Fish and Wildlife Service’s (Service) final rule listing the Northern distinct population segment (DPS) of the LEPC as threatened with a section 4(d) rule and the Southern DPS as endangered ...

On April 13, 2023, the United States Fish and Wildlife Service (“Service”) published a proposed rule to revise the critical habitat designation for the rufa red knot (Calidris canutus rufa). The red knot is a shorebird that migrates annually between the Canadian Arctic and wintering regions to the south, including the Southeast United States, the Northeast Gulf of Mexico, northern Brazil, and Tierra del Fuego at the southern tip of South America. During both northbound (spring) and southbound (fall) migrations, red knots use key staging and stopover areas to rest and feed.  

The ...

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  The Service has repealed a Trump-era rule that excluded incidental take from liability under the Migratory Bird Treaty Act (MBTA), issued guidance for enforcement of the MBTA against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). … 

Today, the U.S. Fish and Wildlife Service (USFWS) released a pre-publication version of its long-awaited update to regulations governing Migratory Bird Treaty Act (MBTA) implementation (Proposed Regulations). Significantly, the Proposed Regulations explicitly state that unintentional, non-purposeful, or “incidental” take of migratory birds is not prohibited by the MBTA’s “take” prohibition. USFWS has also published a pre-publication version of a notice of intent (NOI) to prepare an environmental impact statement pursuant to the National Environmental ...

In August 2008, the U.S. Fish and Wildlife Service (Service) issued a proposed rule to delist the Hawaiian hawk (Buteo solitarius), also referred to as the io, from the federal list of endangered or threatened species.  The proposed rule states that the proposed action is "based on a thorough review of the best available scientific data, which indicates that range-wide population estimates have been stable for at least 20 years, and the species has recovered and is not likely to become an endangered species in the foreseeable future throughout all or a significant portion of ...