Endangered Species Law & Policy

On May 19, 2022, the Center for Biological Diversity (CBD) filed a lawsuit in the U.S. District Court for the District of New Mexico, challenging the U.S. Fish and Wildlife Service’s (Service) failure to make a timely 12-month finding on the group’s petition to list the dunes sagebrush lizard (Sceloporus arenicolus) (DSL), which was submitted to the agency in 2018.

The DSL is no stranger to controversy. In 2002, CBD and others petitioned the Service to list the DSL due to alleged threats to the species’ habitat caused by oil and gas production. In 2004, the Service determined that ...

On May 16, 2022, the U.S. District Court for the Northern District of California overturned the U.S. Fish and Wildlife Service’s (Service) March 31, 2020 withdrawal (2020 Withdrawal) of a proposed Endangered Species Act (ESA) listing and section 4(d) rule for the “bi-state population” of the greater sage grouse (Bi-state Grouse). The Bi-state Grouse lives along the California-Nevada border within six population management units (PMUs) monitored by the Service.   

The Service proposed the Bi-state Grouse for listing as threatened in 2013, then later withdrew that proposal ...

The U.S. Fish and Wildlife Service (Service) has withdrawn its 2013 proposals to list the bi-state distinct population segment of the greater sage-grouse (Centrocercus urophasianus) in California and Nevada as threatened, to designate critical habitat, and to issue a species-specific Endangered Species Act section 4(d) rule. The Service indicated in its withdrawal that the agency has concluded that threats to the species were not as significant as the agency believed in 2013.

The listing, critical habitat, and 4(d) rules for the bi-state distinct population segment of the ...

On March 16, 2018, the U.S. Fish & Wildlife Service (FWS) announced the withdrawal of its 2016 proposed rule to list San Fernando Valley spineflower (Chorizanthe parryi var. fernandina), a southern California plant species, as a threatened species under the Endangered Species Act (ESA).  The spineflower’s conservation has been one component of the long-standing conflict over the development of Newhall Ranch in northern Los Angeles County, since its discovery on the property in 2000.

According to FWS, the spineflower no longer meets the statutory definition of a threatened or ...

On Friday, September 29, 2017, the U.S. Fish & Wildlife Service (Service) announced its withdrawal of the proposed rule listing the Kenk’s amphipod (Stygobromus kenki), an aquatic crustacean, as an endangered species under the Endangered Species Act (ESA).  The Service originally proposed to list the amphipod, which occurs in the District of Columbia, Virginia, and Maryland, in September 2016 due to the impacts of water quality, water quantity, and other collateral impacts of urbanization near the species’ habitat.  In support of its decision to withdraw the proposed ...