America's Wild Seasons

Awakening from winter slumber, spring bursts forth. It’s the season of courting and welcoming new life. Fresh growth brings greener pastures for exuberant bison calves on the plains of South Dakota. In Arizona, blossoms explode, and much more.

As Earth travels around the sun, wildlife across America navigates the changing seasons. Summer brings long hot days, and an urgency to breed. Competition for mates is fierce. Massive bison butt heads on the Yellowstone Plateau, and much more.

Autumn sweeps changes across America. Leaves change color, then fall. In Alaskan rivers, millions of salmon spawn in a frenzy to launch the next generation, then die. Autumn prompts decisions. Prepare for winter. Or leave.

Winter is the ultimate challenge. As temperatures plunge, monarch butterflies and humpback whales flee to Californian and Hawaiian climes. Those staying home face brutal cold and scarcity. Those staying home face brutal cold and scarcity.