I have two Ameraucana hens who are a little over five months old. I was told they would begin to lay in September but they haven't laid any eggs yet. The weather has been colder so I was wondering if that would affect their laying patterns? I also have a Plymouth Barred Rock and a Black Sex-Link, who are both four months old. I don't expect them to lay for at least another month, but what time can I begin to expect eggs from them? Thank you in advance.