I have seven hens and one rooster...all ten months old. Recently, we noticed our hens were developing bald patches on their backs. Not sure if this is from the rooster or just molting? A friend said our rooster was possibly over zealous because we had a light on in the coop at night to give the girls a little extra daylight so that they'd keep laying over the winter. She seemed to think he was unable to settle down due to the light. Has anyone ever heard of this???? We shut off the light, but the problem persists. How long will it take the feathers to grow back, and is there anything else we can do? If we get rid of our rooster, won't the hens start to peck each other? Do we need more hens, maybe?