Ключевые слова: action, aggression, aggressive, animal, animals in the wild, avian, backgrounds, beautiful, behaviour, bird, blue, breeding, conflict, crested, duck, fauna, feather, fight, great crested grebe, grebe, lake, male, mating, natural, nature, outdoors, plumage, podiceps, podiceps cristatus, pond, reflection, ripple, river, season, splash, spring, summer, swim, swimming, swimming animal, territory, two, two animals, water, water surface, waterbird, waterfowl, wild, wilderness, wildlife,