Muna-Buton macaque Muna-Buton macaque The Muna-Buton macaque ("Macaca ochreata brunnescens") is one of seven Sulawesi macaques in Indonesia. It is only found on two small islands off the south-east coast; the islands of Buton and Muna. This Old World monkey is diurnal and arboreal, although it can spend significant amounts of time on the ground. It is black with grey "boots" and a brownish colour to the fur on its back. Like other Sulawesi macaques it has a reduced tail of only about 35mm in length. Its body is about 475 - 495mm in length. The Muna-Buton macaque feeds on fruits for
Barbary macaque he should mate. This is further supported by the fact that male ejaculation peaks at the same time that female sexual swelling peaks. There is not a sufficient change in female sexual behaviour around the time of ovulation in order to demonstrate to the male that the female is fertile. The swellings, therefore, appear necessary for predicting fertility. Barbary macaque females differ from other non-human primates in that they often mate with a majority of the males in their social group. While females are active in choosing sexual associations, the mating behaviour of macaque social groups is not entirely determined