Ключевые слова: animal, aviary, background, beautiful, bird, bird house, birdhouse, box, branch, building, construct, cover, ecology, ecosystem, environment, environmental problems, forest, forest protection, garden, green, handmade, hole, home, house, japan, landscape, leaf, multistorey, natural, nature, nest, nesting box, ornithology, outdoors, park, photosynthesis, plant, regeneration, season, shelter, sky, small, spring, summer, sun light, tree, weather, wildlife, wood, wooden,