For the uninitiated, true bird-watchers keep a “life list” of all the birds they have seen in their life, along with date and location of first sighting etc.  Lisa’s refusal to do so is roughly equivalent to the child of religious parents who no longer goes to church.  In fact, now that I mention it, this whole little spate of comics focussing on Lisa’s foibles is a profoundly cowardly deflection of attention from my own issues.  Shame on me…