The wolves were darted and immobilized in Oregon by expert marksmen and biologists working from a helicopter. They were netted and then brought onto small planes and eventually transported to vehicles,

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 officials announced the release of 15 wolves into northern parts of the state, concluding their second year of wolf restoration efforts.