We describe predation on an adult rodent rock cavy and sharing of the carcass by a group of male bearded capuchins. Despite many studies, such an interaction has never been observed in bearded capuchins. Rock cavies are large rodents weighing around 25% of the weight of an adult male bearded capuchin. The capuchins chased, caught, and shared the adult rock cavy. We observed no strong evidence of communication or division of roles in the successful capture, suggesting that the social hunting episode was not necessarily coordinated or collaborative. Instead, the individuals apparently tried to achieve the same goal of capturing the prey simultaneously (i.e., individuals synchronously performed similar actions to achieve the task), with the strongest individual emerging victorious and tolerating prey sharing afterwards. Our observations add to the understanding of cooperative behaviours such as social hunting and food sharing in bearded capuchins.

我们描述了对成年啮齿动物岩洞的捕食和一群雄性长须卷尾猴的尸体。尽管进行了许多研究，但从未在有胡须的卷尾猴中观察到这种相互作用。岩洞是大型啮齿动物，重量约为成年雄性长须卷尾猴重量的 25%。卷尾猴追逐、捕捉并分享成年岩豚。我们没有观察到成功捕获中的交流或角色分工的有力证据，这表明社交狩猎事件不一定是协调或协作的。相反，个体显然试图实现同时捕获猎物的相同目标（即，个体同步执行相似的动作以完成任务），之后最强的个体出现胜利并容忍猎物共享。