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 wildlife officials on Sunday announced they have completed the capture and release for the second gray wolf reintroduction season.