Ключевые слова: animal, beak, bird, birdwatching, black, black cock, black grouse, bog, cock, early, environment, eyebrow, famous, fauna, feather, forest, game, gorgeous, grass, grouse, hunt, lek, lekking, lyrurus, lyrurus tetrix, male, mating season, morning, nature, open, ornithology, playing, plumage, portrait, red, russia, season specific, spring, spring sunrise, sunrise, tetrao, tetrao tetrix, tetrix, wetland, wild, wildanimal, wildlife, wing, wings, wood,