Ключевые слова: anatidae, animal, avian, aythya, beak, beautiful, bill, bird, black, blue, colorful, cute, duck, eye, fauna, feathers, flight, flock, fly, flying, fuligula, head, life, light, male, nature, open, ornithology, sky, sunset, tuft, tufted, two, vertebrate, waterbird, white, wild, wildlife, wing, yellow,