One of Colorado’s gray wolves released into the state as part of a reintroduction effort has died in Rocky Mountain National Park, while another has been tracked moving across vast

A collared gray wolf released in Colorado in January as part of the state’s historic reintroduction effort died in Rocky Mountain National Park this week, wildlife officials said Thursday.

Colorado Parks and Wildlife biologists confirmed that the death of a female gray wolf occurred in Rocky Mountain National Park on Sunday, April 20. The U.S Fish and Wildlife Service is investigating the mortality