Darkvision

Some character races as well as almost all monsters have Darkvision, an ability which allows them to see even in total darkness. Such vision is in black and white, but otherwise like normal sight. Magical darkness obstructs Darkvision just as it does normal vision. The range of Darkvision is typically either 30' or 60'; if not given for a particular creature, assume the 60' range. Darkvision is totally ineffective in any light greater than moonlight.