The Wuliangshan gibbons are unusual for their social structure. Most gibbons live in small family groups consisting of a mating pair and their offspring. But these gibbons exist in troops. One male can have two or sometimes three females and all of these can have young. Often even the juveniles stay in the community. Rarely glimpsed, this baby may be only a day old. If it survives infancy,then it has a promising future in these few valleys with its close-knit family. 对它们的社会结构来说无量山的长臂猿是如此的与众不同。大多数长臂猿生活在一个小家族之中,由交配的双方和他们的后代所组成。但是这些长臂猿也过着群居的生活。一只雄性长臂猿能够与两只到三只的雌性交配,而且这些雌性都能怀胎生子。通常这些小长臂猿都生活在族群之中。惊鸿一瞥,这只小长臂猿也许刚出生了一天。如果安全度过了婴儿期它将拥有一个充满希望的未来,与它组织严密的家庭共同生活在宛如世外桃源的山谷中。