Excursions to 126 miles recorded. A mix of fruit, nuts, acorns, insects, succulent greens, and meat. Less preferred foods can result in weight loss and failed reproduction. The average age at death in hunted populations is 3-5 years. Cubs or yearlings still with their mothers die mainly from starvation, predation, falls from trees, road-kills, etc.
Few bears die of disease.
Extensive forests with low human populations from Florida and northern Mexico to treeline in Alaska and Canada, extending onto open tundra in Labrador where grizzly bears have been extirpated. Sunlight in small openings promotes fruiting of many food species. Lowlands and wetlands are important sources of succulent vegetation. Streams and woodland pools are important for drinking and cooling. Low human tolerance of black bars due to the unrealistically ferocious popular image of black bears.