We have an Australorp rooster named Bob and four Red Star hens. One has been off on her own for a good bit of time. For the past three nights, she didn't go to the henhouse, and we had to find her. Now, we know why. My husband observed Bob go into the Lowe's shed after this hen and hassle her. While he was mounting her, one of the other hens pecked at her. I caught her this morning and noticed a slightly bald spot on her head. I read that Anti Feather Pecking Spray is supposed to help with this. Is that true? Any other suggestions?