I have a 2yo BR tom and several hens. I think 2 of the hens had mating wounds this summer. there were big slices under the wings and across the back. One has healed and one died. I plan to keep "Ole" for 2 more years, because he's such a good flock master and he's beautiful. But, if he's hurting the hens from mating, it defeats the purpose. His spurs are a good inch long.