Capuchinbird primarily is frugivorous, but also takes large insects. The majority of the fruits on which it forages are in the lower canopy of the forest. At least 37 species of fruit are reported from the diet, primarily from within the Lauraceae, Burseraceae, and Arecaceae (Eutrope) families (Snow 1972).
Invertebrates in the diet include orthopterans, phasmids (walking sticks), caterpillars (larval lepidoptera) and spiders (Haverschmidt 1968, Snow 1972, Restall 2006). Whittaker (1996) observed a Capuchinbird capture a roosting bat, which it subdued and then flew off with the bat in the bill; Whittaker speculated that the bat was carried away to be fed to young.