The Seventh Circuit denied various states' motion to issue a preliminary injunction compelling the U.S. Army Corps of Engineers to prevent the emigration of invasive silver and bighead carp through the Chicago Area Waterway System into Lake Michigan. The states presented sufficient evidence to d...

The D.C. Circuit vacated the National Marine Fisheries Service's (NMFS') methodology for tracking bycatch in the fisheries off the Northeastern coast of the United States. The Magnuson-Stevens Fishery Conservation and Management Act, as amended by the Sustainable Fisheries Act, requires the NMF...

The Ninth Circuit held that a seafood processor association may not intervene in environmental groups' lawsuit challenging the National Marine Fisheries Service's program to preserve groundfish species off the coast of California, Oregon, and Washington. A lower court denied the association's m...

The Ninth Circuit upheld the denial of animal rights groups' motion to preliminarily enjoin DOI from rounding up, destroying, or auctioning off wild horses and burros in the Twin Peaks Herd Management Area on the California-Nevada border. The groups claimed that the large-scale removal of horses...

A California appellate court reversed a lower court decision certifying residents' class action lawsuit against the state wildlife agency in connection with efforts to eradicate an invasive species of fish, the northern pike, from a lake and its tributaries. The residents argued that the agency's ef...

A district court held that NOAA Fisheries' 2008/2010 biological opinion (BiOp) for the Federal Columbia River Power System is arbitrary and capricious under the ESA. In the BiOp it issued to the U.S. Army Corps of Engineers and the U.S. Bureau of Reclamation, NOAA Fisheries concluded that the op...

A district court upheld the constitutionality of an appropriations rider that reinstated an FWS rule that removed ESA protections for the Northern Rocky Mountain gray wolf in all areas outside of Wyoming. The court previously held that the rule violated the ESA because it protected a listed species ...

The D.C. Circuit held that a single sighting of a protected species is insufficient to render a property "occupied" for purposes of designating critical habitat under the ESA. In 2007, the FWS designated 143 acres of plaintiffs' property as critical habitat for the San Diego fairy shrimp under the E...

The Ninth Circuit held that ESA §§7 and 9, as applied to the California delta smelt, do not violate the Commerce Clause. In 2008, the FWS issued a biological opinion (BiOp) to the Bureau of Reclamation concerning two federal and state water diversion projects in California's Central Valley...

The Tenth Circuit held that an individual's conviction under the Bald and Golden Eagle Protection Act for unlawfully possessing 141 eagle feathers does not violate the Religious Freedom Restoration Act of 1993. The individual is a follower of a Native American faith but is neither a member of a fede...