CHOTEAU, MONT., Oct. 30 (CSM) - In autumn, the dry grasslands of Montana paint the foothills of the Rocky Mountains a pale yellow, and grizzly bears follow the creeks downhill to gorge on serviceberries or chokecherries in wetland thickets burnt red by frost. As the weather grows cold, the bears will be joined by herds of elk and deer or by lone predators like lynx and wolverine. Modern conservationists call this wild country "the American Serengeti." But unlike the African Serengeti, Montana's Rocky Mountain Front, a 100-mile stretch of glacier-sculpted peaks and valleys held by the US Forest Service and...