Ключевые слова: aggressive, angry, animal, april, avian, behavior, birding, capercaillie, cock, cold, colorful, courtship, defending, display, displaying, fauna, forest, game, green, grouse, hunting, lek, male, mating, mating season, morning, nature, norway, outdoors, pine, red, run, season, snow, species, spring, taiga, territorial, tetrao, tetrao urogallus, trees, urogallus, western, western capercaillie, wild, wilderness, wildlife, winter, wood, woodland,