Seven Mexican wolf pups born at Brookfield Zoo Chicago have been placed into two wild Mexican wolf dens in New Mexico as part of the Mexican Wolf Recovery Program. The multi-agency conservation effort of fostering zoo-born pups in wild dens has been a successful strategy that continues to bolster the subspecies’ population in the southwest United States. The pups, six males and one female, were fed and kept warm by two animal care specialists and a veterinary technician from Brookfield Zoo Chicago during their flight to New Mexico.