sweden wildlife. black grouse on the pine tree. nice bird grouse, tetrao tetrix, in marshland, polalnd. spring mating season in

animal beak bird birdwatching black bog call cock cold czech dark environment estonia fauna fen finland forest game gorgeous grass grouse lek lekking male marshland mating meadow morning nature nice norway ornithology playing plumage poland portrait red rime season slovakia spring springtime sunrise sweden tetrao tetrix wetland wild wildlife