Ключевые слова: allergenic, allergy, avellana, beginning, birch, bloom, blooming, blossom, blue, botany, branch, bud, bush, catkin, closeup, common, corylus, corylus avellana, countryside, day, earrings, european hazel, fever, flora, flower, forest, garden, hazel, hazel catkins, hazelnut, natural, nature, nut, outdoor, plant, pollen, pollination, season, shrub, sky, spring, springtime, tree, twig, wildlife, yellow,