Jon Russ is hugely respected & well known to us all as the author of books relating to bat acoustics & identification, he also has his own consultancy business, Ridgeway Ecology. During this in depth interview into his back-story & life experiences we explore in some detail his academic research, some projects he has been heavily involved with (e.g. the Nathusius' pipistrelle in GB & Northern Ireland), as well, of course, the popular books themselves, including the recently published Bat Calls of Britain & Europe