a european honey bee apis mellifera harvesting pollen from a white willow tree salix alba by a beautiful spring day

alba allergies apiculture apis beautiful bee bloom blossom blue branch bud capsule catkins clean conservation dioecious endangered environment flowering green harvest honey honeybee insect leaf mellifera motion move movement nectar neonicotinoid neonics organic pale pastel peaceful pesticide pollen pollination reproduction rosaceae salix seeds species spring stinger tree white willow wings zen