Colorado’s ongoing and controversial wolf reintroduction program has hit one of its biggest hurdles yet in the form of a strongly worded letter from the U.S. Fish and Wildlife Service.⁠ ⁠ The letter, which USFWS director Brian Nesvik sent to Colorado Parks and Wildlife director Jeff Davis on Oct. 10, accuses the state of violating its agreement with the federal agency by importing wolves from Canada. Nesvik explains in the letter that under the 10(j) rule, which has allowed Colorado to bring in an “experimental population [of wolves] subject to [USFWS] oversight,” those animals are supposed to come from the northern Rocky mountains population. This growing population of gray wolves was delisted in 2011, and it includes the wolves that live in Idaho, Montana, Wyoming, as well as eastern Oregon and Washington, and north-central Utah. It does not include the wolves that live north of the U.S. border in Canada. This is an important distinction, because in January, CPW released its second b...