blossom of english oak tree or quercus robur with male flowers close-up, selective focus, shallow dof

background beautiful beech below bipartite bloom blooming blossom blossoming botany branch catkins close country deciduous ecology englishoak environment flora flower flowers foliage forest fresh freshness green leaf leaves lush natural nature oak oaktree outdoor park pedunculate plant quercus quercusrobur robur season spring sunlit sunny tree twig upward upwardview wood yellow