Ключевые слова: animals, asia, asian, birds, cranes, crowned, dance, east asian cranes, fauna, field, fight, flapping, group, grus, grus japonensis, hokkaido, japan, japanese, japonensis, jump, large east asian crane, lek, manchurian, marriage, mating, natural, natural habitat, nature, period, red, red crowned cranes, redcrowned cranes, ritual, seasons, snow, spread your wings, spreading, white, wild, wild life, wilderness, wildlife, wings, winter,