In general , the Piciformes are insectivorous , although the barbets and toucans mostly eat fruit and the honeyguides are unique among birds in being able to digest beeswax ( although insects make up the bulk of their diet ) .
In general , the Piciformes are insectivorous , though the barbets and toucans mostly eat fruit and the honeyguides are unique among birds in digesting beeswax ( though insects make up most of their diet ) .