Channel-billed Toucans don't sing, but give a high-pitched, croaking cree-op cree-op cree-op call. Adults court by noisily croaking together, preening each other's feathers (allopreening), and tossing fruits to each other. Males within a group of toucans may chase each other or grapple with their bills to establish dominance.Like the Saffron Toucanet and Thick-billed Parrot, Channel-billed Toucans nest in naturally occurring tree cavities or large woodpecker holes, where both male and female cooperate to raise their young. The small family often remains together after the young fledge; they may also form small flocks of three to 12 birds, which may join with other toucan species while feeding.