Black Grouse (Tetrao tetrix) two males fighting in snow, Oulu, Finland. Sequence 1 of 8.  ,  Black Grouse, Color Image, Competition, Day, Facing, Fighting, Finland, Full Length, Gamebird, Horizontal, Male, Nobody, Oulu, Outdoors, Photography, Sequence, Side View, Snow, Tetrao tetrix, Two Animals, Wildlife, Winter,Black Grouse,Finland  ,  Jan Vermeer