The orangutan is found on Sumatra and which other island?
Sumatran orangutan Sumatran orangutan The Sumatran orangutan ("Pongo abelii") is one of the three species of orangutans. Found only in the north of the Indonesian island of Sumatra, it is rarer than the Bornean orangutan but more common than the recently identified Tapanuli orangutan, also of Sumatra. Its common name is based on two separate local words, "orang" ("people" or "person") and "hutan" ("forest"), and translates as 'person of the forest'. Male Sumatran orangutans grow to about tall and . Females are smaller, averaging and . Compared to the Bornean species, Sumatran orangutans are thinner and have longer faces; their hair is
Sumatran orangutan have large home ranges and low population densities, which complicates conservation efforts. Population densities depend to a large degree on the abundance of fruits with soft pulp. Sumatran orangutan will commute seasonally between lowland, intermediate, and highland regions, following fruit availability. Undisturbed forests with broader altitudinal range can thus sustain larger orangutan populations; conversely, the fragmentation and extensive clearance of forest ranges breaks up this seasonal movement. Sumatra currently has one of the highest deforestation rates in the world. Sumatran orangutan The Sumatran orangutan ("Pongo abelii") is one of the three species of orangutans. Found only in the north of