Grizzly Bear Food Security and Hyperphagia Welfare

Grizzly bears must consume 20,000 calories daily during hyperphagia before hibernation, and disruptions to food sources have direct welfare consequences for individuals and their cubs.

Key Facts

Whitebark pine nuts are a critical pre-hibernation food for Yellowstone grizzlies
White pine blister rust and mountain pine beetle have killed 50% of whitebark pines
Cutthroat trout spawning in Yellowstone Lake has declined 99% due to lake trout introduction
Bears denied adequate calories enter hibernation in poor condition with reduced cub survival
Supplemental berry crops from diverse native plants buffer against single-food-source failures

Welfare Considerations

Grizzly bear welfare in the era of ecological disruption is increasingly tenuous. The loss of whitebark pine nuts - a concentrated, energy-dense food source - forces bears to range more widely and into higher conflict zones seeking calories. Poor pre-hibernation nutrition means mothers produce fewer and smaller cubs, and some adults do not survive winter. Conservation interventions that restore food diversity - whitebark pine planting, lake trout removal - directly improve the welfare of individual bears.

What You Can Do

Support Greater Yellowstone Coalition whitebark pine restoration programs
Advocate for lake trout removal programs that restore cutthroat trout populations
Donate to Yellowstone Forever programs funding grizzly food security research
Reduce your carbon footprint to slow the pine beetle and rust outbreaks climate amplifies