Ключевые слова: animal, background, bark, beak, beautiful, bill, biology, bird, blue, branch, climb, climbing, colorful, crust, down, environment, eurasian, europaea, europe, european, feather, feathery, feeding, forest, head, hole, hollow, life, line, natural, nature, near, nuthatch, over, perched, pretty, singing, single, sit, sitta, songbird, stem, tree, trunk, wild, wildlife,