two Sharp tailed grouse males in battle, lekking and dancing, close up

grouse family grouse fire grouse prairie sharptail courtship mating adult mating season wildlife sharp tailed sharptailed game bird male tympanuchus phasianellus habitat aggregation territory animal lek lekking two dancing ground battle bird native fight cock dominance dof upland engage display action competitive nature springtime mature vegetation canada day outdoors aggression behaviour shallow dance low angle ritual perform