The species is frugivorous, but seeds and nuts constitute a large part of diet.

[7] Most of its time is spent foraging in the middle to upper levels of the rainforest canopy.

When the red-bearded saki takes off from a tree branch, most likely it does this from a vertical clinging position.

[7] The equatorial saki lives in small groups of two to four that come together to form larger congregations.

Groups of red-bearded sakis are described as closed social units.