Moving from one group to another is something that shapes both gorilla and human society. To understand more about its evolutionary origins, researchers studied decades of data on mountain gorillas in the Volcanoes National Park in Rwanda, an area that's been monitored by the Dian Fossey Gorilla Fund since the 60s.从一个群体迁移到另一个群体，这种行为塑造着大猩猩和人类社会。为了进一步了解这种行为的进化起源，研究人员研究分析了几十年来在卢旺达火山国家公园居住的山地大猩猩的数据，该区域自上世纪 60 年代以来一直受到黛安·弗西大猩猩基金会的监测。

The research team tracked the dispersal of 56 different female gorillas over the years. They discovered that the animals tended to join groups with females they knew, friends they'd grown up with or females that they'd made a social connection with more recently. Even if two females had been apart for many years they'd often reunite when an animal moved groups. The scientists say this shows that the relationship between two female gorillas is much more socially significant than previously thought.该研究团队多年来追踪了 56 只雌性大猩猩的分布情况。他们发现这些动物倾向于加入它们认识的雌性大猩猩，或是加入那些和它们一起长大的朋友们、或者是近期和它们建立社交联系的雌性群体。即使两只雌性大猩猩已经分别多年，但当其中一只迁移群体时，它们可能就会再度团聚。科学家们表示，这表明两只雌性大猩猩之间的关系比人们此前认为的更具社会意义。