Small, upright female catkin at the end of the birch twig moved by a breeze

catkin betulaceae plant flower leaf twig betula pendula botany betula european white birch selective focus deciduous erect green spring blossom closeup nature freshness white birch small birch close up tree environment upright tender unobtrusive brown bloom natural monoecious silver birch new young seasonal season rising begin wild european breeze fresh start pedestal inconspicuous subtle real time europe