swarm of adult male butterflies sapping on salt and mineral which also call mud puddling phenomenon during summer on mating season

butterfly swarm mud puddling mineral salt thailand wildlife insect mating sap environment abundance adult animal asian beautiful bug carcasses colorful cycle decay dirt entomology feed flock fly food forest kaeng krachan life male matter moist national nature nectar nutrient nutrition organics park phenomenon rainforest reserve rich rotten season soil summer tropical