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Ten fishers were released into Mount Rainier National Park to help recover the population there./NPS

State and federal biologists have released 10 fishers in the Nisqually River watershed of Mount Rainier National Park as part of a collaborative effort to restore the species to Washington. 

Fishers, a house-cat sized member of the weasel family, were eliminated from Washington by the mid-1900s through over-trapping and habitat loss. They have been listed as a state-endangered species since 1998. 

The four female and six male fishers released Friday were captured in British Columbia as part of a multi-year project to reintroduce 80 fishers to the southern Cascades. They underwent veterinary checkups, and each was equipped with a radio transmitter to allow biologists to track the animal’s movements. 

The reintroduction was made possible by the Washington Department of Fish and Wildlife, the National Park Service, Conservation Northwest, and other partners. Last year, these partners released 23 fishers, 11 females and 12 males, in the southern Cascades in Gifford Pinchot National Forest. Releases in the northern Cascades are planned for the coming years. 

“Watching the fishers return today to their native forests of Mount Rainier National Park after a long absence was inspiring,” said Mount Rainier Superintendent Randy King. “It was an honor to have the Nisqually and Cowlitz Tribes, and the Canadian Chilcotin and Northern Shuswap First Nations attend, bringing their blessings and songs.” 

WDFW and the National Park Service are coordinating the monitoring of the state’s reintroduced fishers. Conservation Northwest is supporting ongoing fisher monitoring with volunteers and remote cameras through its Citizen Wildlife Monitoring Project. These partners worked together from 2008 to 2010 to release 90 fishers in Olympic National Park. Monitoring efforts show that the released animals have distributed themselves throughout the Olympic Peninsula and have successful reproduced. Updates about the released fishers are posted on the WDFW website. 

”We are excited to work with so many committed people to reintroduce fishers into another area where they have lived historically,” said Hannah Anderson, WDFW’s listing and recovery manager. “Fisher enthusiasts ranging across nations have come together to work toward a more robust natural balance with the introduction of these animals in Washington.” 

Fishers are related to minks and otters and are native to the forests of Washington, including the Cascade mountain range. This elusive carnivore preys on various small mammals – mountain beavers, squirrels, and snowshoe hares – and is one of the few predators of porcupines. 

“Mount Rainier is an icon of the Pacific Northwest, and today our region is wilder and healthier with the return of the fisher to Mount Rainier National Park,” said Mitch Friedman, executive director of Conservation Northwest. “We’re thrilled to be a part of this historic reintroduction effort, and thankful to all the scientists, agencies, and supporters who made it possible.” 

Re-establishing viable populations of fishers in the Olympic and Cascade mountains are important steps to down-listing the species in Washington. The state recovery and implementation plan for fisher reintroduction in the Cascades can be found here.