All desert rodents except ground squirrels and chipmunks are nocturnal. Animal vectors include birds, deer, and rodents such as voles, squirrels, and chipmunks. This occurs in species like Belding's ground squirrels and some tree squirrel species. Grizzly bears occasionally prey on small mammals, such as marmots, ground squirrels, lemmings, and voles. They survived primarily on honey, an array of berries, acorns, sage, squirrels, rabbits and birds. They are eaten by wildlife including birds, squirrels and bears. Although burrowing owls often live close to ground squirrels (Marmotini), they rarely prey upon them. Ground squirrels and marmots pass the winter in hibernation. Plants can suffer from damage caused by mice, deer and squirrels. Other terrestrial animals include wolverines, moose, Dall sheep, ermines, and Arctic ground squirrels. Other wildlife includes bats, ringtails, squirrels, and fox. American red squirrels rarely nest below ground. Mountain lions, Kaibab squirrels, and northern goshawks are found here. Cape ground squirrels and meerkats usually do not fight for space or food. This specialized cartilage is only present in flying squirrels and not other gliding mammals.