Hello! I have three hens, 27 weeks old, one Ameraucana and two cochins. They still have not laid their first eggs, I am wondering if they are holding out because of the colder weather. Also for about two weeks now they peck at the back door until 9 at night, when they would usually just go into the coop when the sun goes down. I am hoping someone has some advise for me. Why aren't they laying and why won't they go to bed?! Thank you in advance!!