Why nectar is important to butterflies and where they find it. The Butterfly Conservation SA Society was founded over twenty years ago because of concerns by people that butterfly numbers were declining. Nectar is the major energy source for butterflies, but species differ greatly in the range of flowers they exploit. Recent research has shown that only a small range of herbs, shrubs and a few trees account for most visits by butterflies.  Dr. Peter McQuillan's talk will be of…