It's not until the end of May that winter beats a true retreat. Springtime here is late and short. Caribou with new offspring to tow make their way to new lush warmer lowlands. The frozen frog, released from its suspended animation, finds an inviting woodland pond as nearby as a mother moose gives birth to her calf. New life faces an uncertain future in this harsh wilderness, but for a young grizzly cub the moment is filled with the delight of frolicking in a snow field. For the mother moose, it remains a time for vigilance as she struggles to protect her still clumsy calf from an approaching bear.