Ключевые слова: beak, bird, birding, birds, birdwatching, black, black cock, black grouse, bog, breeding, cock, early, environment, eyebrow, famous, fauna, feather, forest, game, game bird, gorgeous, grouse, habitat, hunt, lek, lekking, male, mating, mating call, mating season, morning, nature, ornithology, playing, portrait, red, russia, season specific, spring, spring nature, spring time, springtime, sunrise, tetrao tetrix, tetrix, uryadnikov, wetland, wild, wilderness, wildlife, wing,