A gray wolf exits a crate on Jan. 14, 2025. Colorado Parks and Wildlife received a mortality signal on March 11 in northwest Colorado for gray wolf 2310, the maternal member of the King Mountain pack.
Colorado Parks and Wildlife/Courtesy Photo

The King Mountain wolf pack’s matriarch died on March 11, six weeks after the pack’s patriarch died during a collaring operation in Routt County.

The female wolf, tagged 2310, was among the wolves brought to Colorado from Oregon in December 2023. The death marks the third wolf death this year. It is the 13th death of the 25 wolves Colorado has translocated as part of its gray wolf reintroduction effort.

The King Mountain Pack was established last spring in Routt County. Colorado Parks and Wildlife observed four pups in January during the collaring operation that led to the patriarch’s death. The pack was one of three new packs established in 2025. 

Parks and Wildlife is leading the investigation in consultation with the U.S. Fish and Wildlife Service, according to a March 13 press release. A final determination of the cause of death will not be made until the investigation is completed, including a necropsy.