Ключевые слова: animal, animal world, bathing, beak, beautiful, beauty, biolog, bioresearch, bird, bird feather, birds nest, blue, decorated, duck, egg cell, fauna, female, great crested grebe, grebes, high, inexperienced, isotopes, lake, lakes, lech, lech barrage, little bird, monster, nature, nature conservation, old water, organic, pond, reed, stream, water, wild, wild animals, wilderness, wildfowl, wonderful,