Vanishing with the Wilderness

What happens to the creatures living in the wilderness when their natural habitat is destroyed? Some die out...others move to a new home, and some like the coyote and opossum have journeyed far beyond their original range. Others move in, attracted by food or by the elimination of their natural enemies. Camped in a wilderness area on the fringe of civilization, Marlin Perkins explores the why and hows of this cross-migration.