This lovely picture book opens on a mother bear and her newborn cubs in their cozy den as a blanket of snow settles over Yosemite National Park. Her newborn cubs grow quickly and soon three furry, hungry black bears set out to experience their world.Spring turns to summer, and the bears roam Tuolumne Meadows, munching tall grasses and keeping a safe distance from park visitors. But not all of the bears' time is spent searching for food: Mama bear must remain on alert for danger and rush her cubs to safety when a forest fire rages close by or another bear threatens them. In the fall, they will fatten up on acorns before returning to their den for the winter.Ginger Wadsworth and Daniel San Souci give readers the bear's eye view and a tour of the seasons in Yosemite's high country with these fascinating and mighty creatures.