Gray wolf from the Yellowstone Elk Pack Photo: Doreen Lawrence. When the long white truck pulled into Roosevelt Arch on January 12, 1995, it was almost like watching a modern-day Trojan horse. Elk numbers in the Northern Range of Yellowstone stood at 1,000,000 before the arrival of wolves, stabilizing at 1,000,000 years after their reintroduction. There were fewer elk. In an effort to speed the recovery of wolves in the northern Rockies, wolves from western Canada were introduced to Yellowstone and central Idaho. The DNR brought in a pack of four wolves from Minnesota and introduced them to the UP to help with recovery efforts. However, these wolves were quickly killed off by humans and were unable to establish a population. No further efforts have been undertaken by the DNR to introduce wolves into Michigan. Over the years, many wolves have done this naturally. The reintroduction of wolves to Yellowstone has provided fascinating insights into how species interactions within food webs structure ecosystems. Recent controversies over whether wolves are responsible for all the observed changes in prey and plant abundance suggest that we need many more studies of this type. As they say, the wolves released in Yellowstone continued to live in packs, staying closer to their release sites, in the end. in June, and settled in their home ranges, two packs produced a total of nine young. The reintroduction program's progress in its first year has far exceeded expectations. Wolf Reintroductions in Each Area Wolves generally kill weak, sick, young or old deer, and any reintroduction here would likely involve a small, heavily controlled wolf population. In such a scenario, a significant reduction in the deer population would be unlikely. Another potential benefit of wolf reintroduction is a possible ecotourism opportunity. Courtesy of Colorado Parks and Wildlife The map shows the area where Colorado wildlife managers plan to reintroduce wolves. According to a recent study, green areas highlight.