Ключевые слова: action, active, adult, animals, asia, asian, birds, birdwatching, cold, cranes, crown, crowned, dance, east asian crane, fauna, feathers, field, flapping, fly up, forest, frozen, grus, grus japonensis, habitat, hokkaido, japan, japanese, japonensis, jump, large east asian crane, lek, life, manchurian, marriage, mating, natural, nature, red, ritual, seasons, singing, snow, spreading, weather, white, wild, wilderness, wildlife, wings, winter,