black grouse, detail head portrait. black grouse, tetrao tetrix, lekking black bird in marshland, red cap head, animal in nature

animal beak bird birdwatching black blackgame bog call cap czech dark detail environment estonia fauna fen forest game gorgeous grass grouse habitat head lek lekking male march marshland mating meadow morning nature nice norway ornithology playing plumage portrait rare red season spring springtime sunrise sweden tetrao tetrix water wetland wild wildlife