Charcoal and ashes?
Posted: Wed Aug 30, 2017 12:19 pm
Recently saw great numbers of Common Blues (I think) sitting on extinguished campfires in a nature reserve in Europe. Presumably they're after a mineral in the charcoal? Or is it that the blackness attracts heat? No other butterflies nearby seemed to care. I suppose it could be mud puddling if charcoal retains moisture after rain but it was a very hot day and I don't think there would have been any dampness left. Does anyone know more about what this is all about?