A second group of wolves has been released in Colorado as part of a controversial, voter-driven initiative to reintroduce the predators to the state. Fifteen gray wolves from Canada were set free in the central mountains over three days last week,

This week, more wolves were released in Colorado as part of an initiative to reintroduce the species to the state. The gray wolf has been endangered in the United States for many years, and recent poaching and habitat loss have further diminished their numbers.

The controversial effort to bring gray wolves back has had mixed success. Of the first 10 wolves brought in from Oregon, dubbed the Copper Creek pack, just six remain in the wild, with one having been recaptured and three killed, Coloradoan.com reported.

Colorado wildlife officials released 15 wolves from Canada into the central mountains over the last week as part of the second wave of the state’s historic, voter-mandated reintroduction of the native predator.

Colorado Parks and Wildlife says 15 more wolves are now in the state as part of the revitalization effort for the species. The animals were released in Eagle and Pitkin Counties.

A group of wolves have been flown from Canada to Colorado for another round of reintroductions, which has been highly controversial. There’s no word

Wolves from British Columbia arrive in Colorado for reintroduction program. CPW remains tight-lipped on details of the operation.

Colorado Parks and Wildlife released 15 more wolves into the state, capping off the second year of wolf restoration efforts.