Ключевые слова: animal, aquatic bird, aves, avian, background, beak, bird, birds, blue, breeding plumage, city, closeup, color, colorful, colors, crest, details, diving, ducks, environment, europe, european, feather, fishing, foraging, great crested grebe, grebe, grebes, lake, lb, male, migratory, natural, naturally, netherlands, outdoor, plumage, podiceps cristatus, reflection, swamp, swim, urban, utrecht, water, waterfowl, wett, white, wild, wildlife, wing,