gonepteryx rhamni, the common brimstone, take a rest on a flower of willow.

background biodiversity blooms blossom blurry bokeh branch brimstone bush butterfly catkin close-up closeup common differential easter ecosystem elegance entomology environment european floral flower flowers fluffy focus gonepteryx green insect lepidoptera macro nature nectar petal pink plant pollination pollinator pussy rhamni salix season spring springtime tree twig wild wildlife willow wing yellow