silvery blue butterfly feeding on lupin flower

silvery blue butterfly feeding lupin flower animal animals wild background bay area beautiful beauty bloom blossom california closeup color colorful day fauna flora floral fly garden gossamerwinged green insect leaf lepidoptera lupine lupinus lycaenid lycaenidae macro natural nature nectar petal pink plant pollination purple san francisco santa clara county spring summer wildlife wings alum rock park usa doubleday glaucopsyche lygdamus