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…

The D.C. Circuit upheld a lower court decision dismissing an environmental group's action challenging FWS' and the National Park Service's plan for managing elk and bison populations in the…

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…

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…

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…

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…

The D.C. Circuit vacated the National Marine Fisheries Service's (NMFS') methodology for…

The Ninth Circuit held that a seafood processor association may not intervene in…

A district court, in a 116-page opinion, upheld the FWS' final rule listing the polar bear…

A district court held that the FWS' biological opinion (BiOp) for the U.S.…