We live in North Central Florida We have 5 hens and a Rooster and as of late I notice 3 of the hens are showing signs of being pecked. They have a large pen and coop and free range 4 to 5 hours a day. Could the rooster be doing this? The rooster is a Rhode Island Red and is very aggressive. And while I am here do I really need a Rooster? Thank you for any help.