In Foreste Casentinesi National Park, the annual census of Red Deer, based on the vocal rutting monitoring, has become a very important event involving for three days and nights more than 600 volunteers that arrive from all over Italy and abroad, belonging to different categories: wildlife managers, scientists, rangers, students, hunters, environmentalists and ordinary volunteers. All the involved volunteers are requested to spend many hours in the night outside. They are divided in couples, listening to rutting deer and registering data. During the days, they attend seminars, training lessons and moments of conviviality. The original goal of monitoring the Red Deer population for managing purposes is now accompanied by other important objectives: removal of cultural barriers between people from very different cultural and social backgrounds about nature conservation; nature tourism opportunity; social experience, creating a strong feeling with the Park.