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Grizzly bears (and Native Americans) depended on acorns as their staple food -- but they are now extinct and the resource is often unused.
near Manzana Creek, San Rafael Wilderness, Los Padres NF, CA (1993).
High Sierra backpackers find it necessary to hang their food to protect it from bears.
Nelson Lake, near Tuolumne Meadows, Yosemite NP, CA (1977).
Another strategy for dealing with hungry bears -- steel bear boxes in problem backcountry sites.
Cliff Creek, near Mineral King, Sequoia NP, CA (1990).
Bears are the primary reason for the design of these special national park garbage cans.
Valley View, Yosemite NP, CA (1983).
Bears are very good at reaching food resources, no matter how they are packaged.
near Upper Hamilton Lake, Sequoia NP, CA (1990).
Bears in national parks know that bags hanging in a tree indicate available food.
Nelson Lake, near Tuolumne Meadows, Yosemite NP, CA (1977).