The color pattern is much like that of "Vipera berus". "Vipera berus" has a wide range. There are five species and all but one ("Vipera berus") are protected by law. Male adders ("Vipera berus") undertake complex ritualised confrontations when courting females. Reptiles found include the European adder ("Vipera berus") and grass snake ("Natrix natrix"). Among reptiles are the common European adder (vipera berus), and indicator of complex habitat. The adder ("Vipera berus") is the most common, being found on open heath and grassland. Three subspecies are recognized, including the nominate subspecies, "Vipera berus berus" described here.