The siamang inhabits the forest remnants of Sumatra Island and the Malay Peninsula, and is widely distributed from lowland forest to mountain forest—even rainforest—and can be found at altitudes up to 3800 m.[5] The siamang lives in groups of up to six individuals (four individuals on average) with an average home range of 23 hectares.[2][7] Their day ranges are substantially smaller than those of sympatric Hylobates species, often less than 1 km.[5] The siamang's melodious singing breaks the forest's silence in the early morning after the agile gibbons' or lar gibbons' calls.