In this article the authors refer to three topics relating to the lives of the Corvidae, which are currently being studied within an international context. These are individual inventiveness and playfulness, ritualised behaviour towards dead individuals of their own species and the ability to recreate local ecosystems by using landfills.
Playful and creative behaviour, which is often on the boundary between special-purpose activity and primarily useless to dangerous activity, is thus one of the important ethological and ecological characteristics of many species.