Ключевые слова: adult, anatidae, animal, animals, avian, avifauna, bird, birding, birds, brahiminy duck, brown, buzzer, color, duck, fauna, feather, ferruginea, goose, gosling, grass, green, ground, habitat, introduced species, lake, moscow, native species, natural, nature, orange, ornithology, outdoor, outdoors, park, pond, ruddy, ruddy sheldduck, ruddy shelduck, russia, sheldduck, shelduck, swim, tadora, tadorna ferruginea, water, waterbird, waterfowl, wild, wildlife, young,