Ключевые слова: april, background, betula, birch, birch catkin, bloom, blossom, blossoming, blue, blue sky, botanic, botany, branch, bright, bud, catkin, closeup, copy space, countryside, day, detail, early, earring, forest, fresh, freshness, garden, hanging, male, moor birch, natural, nature, no people, nobody, outdoor, plant, pollen, reproduction, season, seasonal, sky, spring, springtime, sunshine, tree, twig, willow, wood, young,