Hyperphagia Survival Strategy
As autumn turns to winter and temperatures plummet, bears enter into a feeding frenzy called hyperphagia. Hyperphagia is from the Greek words phagia (to eat) and hyper (obsessively) and thus means 'to be obsessed with feeding”. Incessant feeding is exactly the behavior I observed in the Black Bears inhabiting the southern Hawthorn abundant region of Grand Teton National Park. Each River Hawthorn tree produces a windfall of nutrition at a time when other food sources are becoming scarce. For ravenous pre-hibernation bears that must enter hibernation with maximum fat stores, Hawthorn berries may provide life or death sustenance for winter survival.
black bearursus americanuswildliferiver hawthorncrataegus rivularishyperphagiaautumngrand teton national parkwyoming