DAVIS, Calif., July 16 (UPI) -- Rat poison used by people illegally growing marijuana in remote areas of California may be killing the fisher, a rare weasel-like carnivore, researchers say.
Researchers from the University of California, Davis, along with the Wildlife Conservation Society and other partner institutions, said they've found commercial rodenticide in dead fishers in Humboldt County near Redwood National Park and in the southern Sierra Nevada in and around Yosemite National Park.