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Journey with Kirk Johnson to Yellowstone, where wolves, grizzlies, beavers and Great Gray owls survive one of the greatest seasonal changes on the planet. As the temperature swings 140 degrees, cameras capture how the animals cope.
Wildlife Cameraman Charlie Hamilton James follows some hungry wolves near Jackson.
Soaring temperatures bring wildfires, and something’s forced the beavers to leave home.
Spring is here and Yellowstone is bursting into life, but the thaw is just beginning.
Kirk tastes biscuit root – a grizzly bear favorite. Plus, cameras catch a bear hug.
A male grizzly emerges out of hibernation early. Can he find enough food to survive?
