Recently, the 50th anniversary of the publication of Animal Behaviour has passed. To mark the occasion, a group of prominent behaviourists have written essays relevant to their fields. These essays provide a glimpse of the study of behaviour looking in all directions. History and future aside, it is imperative to broadcast this information from the perspective of the behaviourists who have helped shape both the past and the future. It is important for any field to be both retrospective and prospective: where have we been, where are we going, where are we now? These essays provide a...