Ключевые слова: animal, animals, aquatic, biodiversity, bird, birds, color, colors, colour, colours, common carp, common carps, cyprinus carpio, dabbling duck, dabbling ducks, duck, ducks, eat, eating, eurasian carps, eurasian wigeons, european carps, european wigeons, fauna, feed, feeding, fish, fishes, japan, lake, lake yamanako, mareca penelope, natural, nature, vertebrate, vertebrates, water, waterbird, waterbirds, waterfowl, widgeon, widgeons, wigeon, wigeons, wild, wildlife, zoology,