 Like many species in "Campephilus", their drum is a loud double knock.Magellanic woodpeckers inhabit mature "Nothofagus" and "Nothofagus-Austrocedrus" forests, where they feed mainly on wood-boring grubs and adult beetles (Coleoptera), as well as spiders.Occasionally, other foods may supplement the diet, including sap and fruits, as well as small reptiles, bats, and the eggs and nestlings of passerines.