Ключевые слова: animals, beauty bird, birding, birds, birdwatching, birkhuhn, black, black grouse, black grouses, blackgame, bog, cock, early, europe, european, eyebrow, fauna, forest, game, gorgeous, grouse, head, hunt, lek, lekking, lyrurus, lyrurus tetrix, male, mating, mating call, mating season, morning, nature, ornithology, playing, portrait, red, russia, season, season specific, species, spring, spring nature, sunrise, tetrao, tetrao tetrix, tetrix, wild, wilderness, wildlife,