Mammals taken included mice, rats, voles, shrews, moles and rabbits. Lemmings, tundra voles and Arctic shrews are common. Animal vectors include birds, deer, and rodents such as voles, squirrels, and chipmunks. Rubber boas primarily feed on young mammals such as shrews, voles, mice, etc. In the taiga forests, species include squirrels, chipmunks, voles and lemmings. Grizzly bears occasionally prey on small mammals, such as marmots, ground squirrels, lemmings, and voles. Many rodents such as voles live underground. Elk browsing improves forage for other herbivores like deer, voles and snowshoe hares. The Arvicolinae are a subfamily of rodents that includes the voles, lemmings, and muskrats. These include squirrels, mice, voles, rats and the recently reintroduced European beaver. Plastic mesh cylinders were effective in preventing seedling damage by meadow voles and other rodents. Wildlife spotted include kingfishers, herons, roe deer and water voles. Included are mice, rats, gerbils, hamsters, lemmings, and voles. Roughly 90% of its diet consists of small rodents, such as mice and voles. These species include monkeys, sheep, cattle, prairie voles, mice, and ferrets.