Image ID: 12-6153c

The black bears, Ursa americanus, in autumn are voracious eaters, fattening up for the upcoming winter. Consuming almost 20,000 calories a day, this feeding frenzy called hyperphagia, will tide them over during their winter hibernation.

They are also very athletic and nimble. This cinnamon-colored black bear in Grand Teton NP was able to climb 20-30 feet up the hawthorn trees to reach the ripe berries. Quite a feat for a 300 pound bear.

Although very focused on eating, a noise in my direction caught her attention. But quickly she got back to the task at hand.