There is very little information on the diet of Black-girdled Barbet; it consumes both fruit and arthropods, but the relative contributions of each to the diet are unknown. Schubart et al. (1965) reported the contents of the stomach of one specimen as fruit, and the stomach of second specimen contained several spiders. On the other hand, Short and Horne (2001) report that "of seven stomachs one contained only arthropods, the others only fruits". Fruits in the diet include Ficus, Cecropia, and those of "a small tree with small, reddish (rubiac-like) fruits" (Zimmer et al. 1997).