Ключевые слова: alert, alone, anatidae, animal, animals in the wild, anser anser, aves, avian, bird, creature, day, daytime, differential focus, duck, environment, feathers, full length, grey, greylag goose, habitat, lake, long neck, natural, nature, nobody, one, orange beak, outdoors, outside, pond, portrait, profile, reflection, river, selective focus, side view, swimming, tan, vertical, water, waterfowl, white, wild, wildlife, wings,