Close-up of orange butterflies gathered near swamp water, also known as julia, dryas, or flame butterflies

butterfly orange water flame butterfly dryas puddle swamp pond gather display color flit iulia julia butterfly lepidoptera flutter perch land wing display colour bask alight explore expand descend rest roost display black vibrant color vibrant colour moist group fly flight from one place to another puddling behaviour mud wet branch congregation pattern defense mechanism survival interaction social mob lagoon wetland