I have 4 hens and one rooster. They have been cooped together for a few weeks now without any serious problems. Occasionally the rooster will attack one of the hens but he doesn't persist too long. And he is also trying to make chicks with the hens sometimes too! Today when I let them out, the roo kept after one of the bigger hens that never backed down to him previously. He was pulling on the feathers on the back of her head and pulling her around. Her head is bald and bleeding, there is blood dripping down her beak, the other hens have jopined in on pecking her. This just started today. her comb is torn up also. I have put her in a dog crate within the coop so she wont get picked on further. I'm sure when I let her out again the pecking will continue. Now to the question...What can be done? Do I need to medicate this bird? I will keep her seperate for awhile but she can't live in the cage forever. Any ideas?