In its 2020 decision not to list coastal fishers, the service argued that the Sierra population of a few hundred fishers was genetically different and separated by a 130-mile geographic gap from the Southern Oregon population that is up to a few thousand. The Siskiyou Mountains population of Pacific fishers is native, while another in the south Cascades is from fishers introduced by private timber owners to prey on porcupines, which damage young trees.įishers are the only animals known to prey regularly on porcupines. The fisher's range was reduced dramatically in the 1800s and early 1900s through trapping, predator and pest control, and changes in forest habitats from logging, fire, urbanization and farming, according to the past Fish and Wildlife Service decisions. They once roamed forests from British Columbia to Southern California. It is joined by KS Wild and the Environmental Protection Information Center based in Arcata, California.Ī service spokesperson did not immediately return a telephone call seeking comment.Ībout the size of large house cats, fishers belong to a family of mammals that includes weasels, mink, martens and otters.įishers live in low- to mid-elevation forests and require cavities in trees for rearing their young, as well as forest canopies to rest and hide from predators. District Court in San Francisco by the Center for Biological Diversity. "You can't do a conservation agreement with cartels," Sexton said. The rodents killed by rat poison get eaten by fishers, which in turn suffer from poisoning at high rates, federal studies show. While historical trapping and loss of old-growth habitat has harmed the fisher's recovery, threats such as rodenticide used by illegal marijuana grows on federal lands add a growing threat, Sexton said. "There's a lot of ways to bite the dust." "It's a lethal cocktail out there, if you're a Pacific fisher," Sexton said. George Sexton, KS Wild's conservation director, called that decision purely political and that it came when fishers here face increasing threats, not diminishing ones.
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