Two western Canadian governments are culling grey wolves in a bid to save caribou. Experts say these culls are unscientific, unethical and unwarranted. Establishing habitat quality is the only answer for any significant increase in caribou population. In contrast wolves in the Banff National Park are now part of the Southern Rockies Canine Project. This is the most extensive wolf research project in North America. Since the recolonization of wolves in the 1980's this has improved the balance of the ecosystem, and the park is determined to keep them in place.