We had two enthusiastic roosters and they pulled the feathers off of 3 of our Barred Rock hens. We butchered one and kept the quieter rooster. We also added ALOT more hens to the flock. Will the feathers regrow and if so when? I was thinking they would molt before winter and the feathers would grow back in then, so far this hasn't happened and I just think of how cold it is going to be with no feathers on there backs. What can I do to get them to regrow?