The Barbary macaque population in Gibraltar is the only wild monkey population in the European continent, and, unlike that of North Africa, it is thriving. At present, some 300 animals in five troops occupy the area of the Upper Rock area of the Gibraltar Nature Reserve, though occasional forays into the town may result in damage to personal property. As they are a tailless species, they are also known locally as Barbary apes or rock apes, despite being monkeys (Macaca sylvanus). The local people simply refer to them as monos when conversing in Spanish or Llanito (the local vernacular).