Right now, across Earth’s northern-most latitudes, water wolves are stirring. Even while ice cover still encases many lakes, this spectacular freshwater predator is already on the prowl. As Esox lucius migrates en masse into shallow bays, river backwaters and sloughs, however, it’s procreation rather than predation that propels their journey. Standing at the mouths of these same shallow bays, renowned freshwater photographer Bill Lindner doesn’t have to wait long to witness the earliest spring spawning movements of northern pike. For…