Observation notes: Hill Topping with Pale, Indra, Sleepy, Pacuvius , Echo Others high 60's to low 70's, wind 8+mph with gusts. Clear Felt warmer that it was. These Butterflies were very actively Chasing each other Landing Just shortly to sun Bask then return to fighting again. I have read that Hedgerow displayed this behavior but this is was new to me! Oh also have not seen Northern Cloudy Hilltop and dog fight! Multiple individuals all chasing each other for almost endless flying activity!