Ключевые слова: adult, animal, aquatic, avian, beak, bill, bird, black, blue, brown, cold, colorado, colorful, common, drake, duck, feathers, female, fowl, green, grey, hen, ice, lake, male, mallard, maroon, mature, migrating, migratory, natural, nature, outdoors, pair, perch, plumage, pond, stream, swimming, wading, water, web, webbed, wet, wetlands, wild, wildlife, wing, winter,