This cuckoo is an insectivore, eating mainly insects and their larvae. Hairy caterpillars, which are rejected by most birds, are eaten by C. canorus. The cuckoo is not poisoned after eating the caterpillar because before eating it, the cuckoo will bite one end of the caterpillar, slice the caterpillar using its beak, then shake the insect at one end until the toxic contents are released.
Animal Foods: insects; terrestrial non-insect arthropods
Primary Diet: carnivore (Insectivore )