Ключевые слова: anas crecca, animal, autumn, avian, background, bird, duck, duck pond, environment, europe, flight, flock, fly, fowl, group, hunt, lake, male, mallard, many, migrate, migrating, migration, migratory, migratory bird, nature, netherlands, ornithology, outdoors, pond, refuge, season, species, swim, takeoff, teal, travel, various, water, water bird, waterfowl, wetland, wild, wild bird, wilderness, wildlife, wing, winter,