My guineas are almost 8 weeks. I really need to kick them out. I've discovered that they are the aggressive culprits pecking off the feathers of my chicks (chicks and guineas are the same age). I tried to stop the feather pecking by increasing protein and giving them a larger, more interesting area. After watching them for awhile I really think I just need to get them out. They seem to chase all the other chicks/keets/peacocks for no discernible reason.