Ключевые слова: animals, background, birding, birds, birdwatching, black, black cock, black grouse, blackcock, blackgame, call, calling, cock, early, fauna, forest, game, gorgeous, grouse, grouse portrait, grow mating behavior, in, lek, leking, lekking, leksite, lyrurus, male, mating, mating call, morning, nature, ornithology, playing, plumage, portrait, russia, season, specific, spring, spring sunrise, springtime, sunrise, tetrao, tetrao tetrix, tetrix, wild, wilderness, wildlife,