Hello! I have two 11 week old red sex link hens. When we first brought them home at 2 weeks, they were very calm and loved being around humans. They actually cried out when we weren't near them. They have been very nice and good hens for a while, until one of them started crowing a few weeks ago. At first I thought it was just one, but then the other started crowing as well, I think mimicking the other one. They are both definitely hens because of their breed and coloration. The neighborhood does not allow chickens, so we have to keep them a secret, but if they keep crowing the secret will be let out. And also, just starting about last week, one of them, Cinnamon, has become very aggressive towards us. If we reach in to grab her, she bites, and holds on as hard as she can. The other one, Priscilla, is the sweetest thing, so I don't know what to do. I don't want to have to give them away, and eating them is NOT an option. Any tips?