blue mason bee / stahlblaue mauerbiene / osmia caerulescens ♀

animal approaching aspire awareness balkon bee biodiversity blue box busy caerulescens cavity condo conservation control copy determination diligent environment female flyer flying garden high hole honey honeybee hotel individual insect landing mason mauerbiene megachilidae minded nature nest osmia pilot pollination single solitary space species spring stahlblaue trigger useful