arch archway birch building buildings corridor corridors house patio square tree walls windows autumn birch trees Birke blue sky fall foliage grass idyllic leafs luminous meadow natural nature nobody November tree trunks vivid weather yellow cloud clouded cumulus field grassland landscape Natural landscape plain plant sky summer trees allergie bloom branch Canoe birch flower ice pollen seeds snow twig winter woody plant background bark black blue branches brown colors forest green leaves walk white birch tree brush bushes coppice copse covered dark forest deep forest fern haunted forest impermeable magic magic forest magical misty thicket trunks wood wood land woodland bird birdhouse birds hang hole plank planks shelter wooden leaf plane Plant stem silver wattle trunk ament aments catkin catkins cutout hazel isolated seed distance germany hills horizon idyll landscape scenery peaceful rural sea spring Betula England english epiphyte Great Britain heathland lichen Surrey