silhouette of lekking black grouse ( lyrurus tetrix) against the dawn sky. early morning backlight. birkhuhn, black grouse (tetrao

active animals april background beauty bird birding birdwatching birkhuhn black blackcock blackgame bog call contra early european fauna fly forest game gamebird golden grouse hunt lek lekking light lyrurus male morning nature ornithology playing russia season species specific spring springtime sunlight sunrise sunset tetrao tetrix wild wilderness wildlife