December 5, 2000 – The Center, Sierra Nevada Forest Protection Campaign and 16 other environmental groups petitioned the U.S. Fish and Wildlife Service to list the fisher as endangered under the federal Endangered Species Act in its West Coast range.
April 2003 – A federal judge sided with the Center and allies in a suit filed to force the Service to process a listing petition for the fisher submitted by the Center, the Sierra Nevada Forest Protection Campaign and 16 other environmental groups. The judge ordered that an initial decision on the status of the fisher be made within 90 days.
June 2003 – The Service issued an initial positive decision that the Pacific fisher in the forests of California, Oregon and Washington qualifies as an endangered species.
April 8, 2004 – The Service published a proposed rule that found that Endangered Species Act listing was “warranted but precluded” for the Pacific fisher and made the fisher a candidate species, giving it no protection.
February 28, 2007 – The Center and other conservation groups intervened in a timber-industry lawsuit that sought to remove the fisher from the list of candidate species. The lawsuit was brought about on the claim that the Pacific fisher is a “distinct population segment” of a subspecies and therefore should not be considered for protection.
August 2008 – The California Fish and Game Commission followed a recommendation by the Department of Fish and Game to reject the January petition, despite the fact that, as a public-records act request by the Center revealed, most of the Department's own biologists had in fact supported the petition.
February 2009 – The Center and allies petitioned for protection for Northern Rockies fishers.
March 5, 2009 – After a Center public-records act request revealed that most of the Department's own biologists had in fact supported our January petition — and after a decision to reject a petition to protect the Pacific fisher was overturned in court — the Commission decided to reconsider its August decision, voting to make the Pacific fisher a candidate for state protection. The agency initiated a status review for the animal.
February 4, 2010 – The Center, Sierra Forest Legacy, the Environmental Protection Information Center, and Klamath-Siskiyou Wildlands Center filed a notice of intent to sue Interior over its failure to protect the Pacific fisher under the federal Endangered Species Act.
April 8, 2010 – The Center and allies, represented by Earthjustice, filed a lawsuit asserting that the Fish and Wildlife Service was illegally delaying Endangered Species Act protection for the Pacific fisher, a relative of the mink and otter that has been decimated by historic fur trapping and logging of old-growth forests.
September 15, 2010 – Over the objections of independent and agency scientists, the California Fish and Game Commission announced it would not protect the Pacific fisher under the California Endangered Species Act.
November 9, 2010 – The Center for filed suit challenging the California Fish and Game Commission's decision to deny state Endangered Species Act protection to the Pacific fisher.
June 11, 2015 – In response to a petition and lawsuit from the Center, the California Department of Fish and Wildlife recommended state Endangered Species Act protection for the fisher in the southern Sierra Nevada portion of its range.
April 14, 2016 – The U.S. Fish and Wildlife Service denied Endangered Species Act protection to West Coast fishers that were proposed for federal protection in October 2014 throughout their range in California, Oregon and Washington.
April 29, 2016 – The U.S. Forest Service issued a decision approving more than 1,000 acres of post-fire logging in a roadless area in the Sierra National Forest that U.S. Forest Service surveys, conducted post-fire, show to be occupied by rare West Coast fishers.
June 13, 2016 – The Center and three other conservation groups filed a notice of intent to challenge the U.S. Fish and Wildlife Service's decision in April to deny Endangered Species Act protection to Pacific fishers.
January 12, 2017 – The Service announced its consideration of federal protection for Northern Rockies fishers.