Action timeline

November 10, 2005 – The Center, Sagebrush Sea Campaign, Western Watersheds Project, and Desert Survivors petitioned the U.S. Fish and Wildlife Service to recognize the Mono Basin area sage grouse as a distinct population segment and list the population as endangered or threatened under the Endangered Species Act.

December 19, 2006 – The Service acknowledged that Mono Basin area sage grouse were genetically distinct from other populations but improperly found that the petition did not sufficiently demonstrate that the species may be in danger of extinction. The Service refused to conduct a status review of whether or not to list the population.

August 23, 2007 – The Center and other petitioners filed suit against the Service challenging the 2006 decision.

February 26, 2008 – The Service agreed to voluntarily remand the 2006 decision and issue a new 90-day finding.

April 29, 2008 – The Service announced it would consider listing the Mono Basin sage grouse under the Endangered Species Act as a distinct population segment.