Ключевые слова: and our, animal, beak, beautiful, bird, birding, colorful, common, couple, courtesy, courtship, crested, crested grebe, czech, dance, duck, duck couple, duck pond, ducks, europe, european, fauna, feather, female, flirting, fowl, fresh, great, great crested grebe, grebe, lake, love, mating, nature, neck, ornithology, pair, plumage, podiceps cristatus, river, small, species, spring, surface, swim, water, water bird, wild, wildlife,