The diet of Eared Quetzal has not been described in detail, but it appears to mostly consist of insects and fruits. Items known to be in the diet include wooly black caterpillars, green larvae, katydids, a six-inch moth, blackberries (Rubus sp.), and madrone berries (Arbutus sp.), the last of which seemed to be particularly favored by the birds sighted in Arizona (Taylor 1994, Gonzalez-Rojas et al. 2008, Lammertink et al. 1996). There are sufficient sources of insects and berries in selectively logged forest, which supports the notion that the quetzals are not restricted to undisturbed habitat (Lammertink et al. 1996), see Habitat.