birkhuhn, black grouse (tetrao tetrix), blackgame (lyrurus tetrix). close up portrait of a lekking black grous

action animal beauty bird birding birdwatching birkhuhn black blackgame bog breeding call early europe european eyebrow fauna feather fighting forest game gorgeous grouse lek lekking lyrurus male mating morning nature ornithology playing portrait red russia season singing species spring springtime sunlight sunrise sunset tetrao tetrix wetland wild wilderness wildlife