Researchers say a wolverine appears to be thriving in the northern Sierra Nevada, seven years after being confirmed as the first one in California since 1922.
California Department of Fish and Wildlife biologist Chris Stermer says more than two dozen documented sightings of the solitary predator have occurred since it was first observed in March 2008 about 15 miles northwest of Truckee, California.
The same wolverine is believed to have been last detected in November by a motion-sensing in the Tahoe National Forest near Fordyce Lake, which is only some 15 miles southwest of where it was originally seen.
Stermer says the male appears healthy with dense fur and ample weight, and has staked out a nearly 300-square-mile swath of the Sierra north of Interstate 80 as his territory.
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