He will also lead the other male members to attack another group of capuchins, e.g., during confrontations at a fruiting tree. The dominant male quickly defends juveniles that he has probably fathered, but is aggressive to males born before his tenure in the group. A capuchin group is cohesive, but males may change groups occasionally. They seem to travel in a specific order juveniles go first, followed by males and females, with mothers and their babies bringing up the end. Although other capuchins are highly territorial, the tuft-capped capuchins are more tolerant.
Many calls mean something specific, but the context can affect the final interpretation.
This is combined with facial expressions and body postures. They also communicate by scents and often urinate on their hands then rub their feet and fur. This gives them a unique individual 'perfume' and allows them to mark their trails and territory as they move around. The newborn is fully furred but helpless and clings to the mother constantly for the first 5 weeks. It first clings to her tummy, and when it gets bigger, rides on her back or shoulders.