A wildlife survey found 242 species of mammals, birds, amphibians and reptiles. The largest species are the ungulates, such as the bighorn sheep, mountain goat, moose, red deer, white-tailed deer, mule deer, though there are also black bears and grizzly bears that also live in the park. Coyotes and martens are the only widespread and common carnivores in the park, though bobcats and cougars live in the southern regions. Timber wolves, lynxes, wolverines, minks, fishers, badgers, river otters, skunks and long and short-tailed weasels have also been identified but are not common. The most common non-carnivorous mammal species living in the park are the snowshoe hare, red-backed vole, deer mouse, red squirrel and Columbian ground squirrel. Most bird species only use the park as their summer grounds or part of their migration route; only 32 species live solely in the park. Some of the most common birds include the boreal owl, yellow-rumped warbler, golden-crowned kinglet, common yellowthroat, American robin, spotted sandpiper, chipping sparrow, two-barred crossbill, rufous hummingbird, water pipit. Other bird species that may be observed include the common loon, Canada and Steller's jays, Canada and snow geese, Trumpeter and Tundra swans. The three reptiles identified were the rubber boa, common garter snake and western terrestrial garter snake. In 1984, UNESCO added the Canadian Rocky Mountain Parks World Heritage Site, to the World Heritage List. This World Heritage Site included the four contiguous national parks: Kootenay, Banff, Jasper and Yoho. At the time, the site was deemed to meet the natural criteria for examples of geological processes, record of life, and for exceptional natural beauty. In 1990, the Mount Assiniboine, Mount Robson and Hamber Provincial Parks were added to the World Heritage Site, bringing its total area up to . Under their Statement of Significance, UNESCO states "With rugged mountain peaks, icefields and glaciers, alpine meadows, lakes, waterfalls, extensive karst cave systems and deeply incised canyons, the Canadian Rocky Mountain Parks possess exceptional natural beauty, attracting millions of visitors annually."