A wolf in Lassen County caught on camera on June 30. Photo/CDFW

California Department of Fish and Wildlife biologists have captured and fitted a tracking collar to a female gray wolf in Lassen County, and confirmed that the wolf and her mate have produced at least three pups this year.

During summer and fall 2016, remote trail cameras captured images of two wolves traveling together in Lassen County. While the female’s origins remain unknown, genetic samples obtained from scat indicated the male wolf originated from Oregon’s Rogue Pack. The famous wolf OR7 is the Rogue Pack’s breeding male.

In early May, biologists from the U.S. Forest Service found evidence of recent wolf presence in the Lassen National Forest. CDFW biologists began surveying the area.

On June 30, after 12 days of trapping attempts, the 75-pound adult female gray wolf was captured. After a thorough exam by the biologists and a wildlife veterinarian – including the collection of genetic and other biological samples – the wolf was collared and released.

The following day, July 1, CDFW biologists returned to the field for a routine follow-up check on the female. They encountered tracks of what appeared to be wolf pups, and then found that a nearby trail camera operated by USFS had captured photos of the female with three pups. The pups were gray in color and were photographed playing in front of the camera.

These wolves, named the Lassen Pack by the USFS employee who first detected their location, are the second pack of gray wolves known in California since their extirpation in the 1920s. The first confirmed breeding pair in California produced five pups in eastern Siskiyou County in 2015, and are known as the Shasta Pack. The current status of the Shasta Pack is unknown, although one of the 2015 pups was detected in northwestern Nevada in November 2016.

Gray wolves are currently state and federally listed as endangered.