Ключевые слова: animal, aquatic bird, aves, avian, beak, berlin, bird, birds, blue, boat, breeding plumage, color, colorful, diving diving, duck, ducks, environment, europe, european, feather, foraging, germany, grebe, lake, law, lb, linum, male, migratory, natural, nature, outdoor, plumage, podiceps grisegena, red, rednecked, rednecked grebe, reflection, swamp, swim, swimming, water, waterfowl, white, wild, wildlife, wing,