I have a 5 1/2 month old Ameracauna hen. For the past 3 hours or so she has been making mournful sounds and staying in the coop pacing back and forth. She started out making loud squawks but is much quieter mow. She is moving the straw around and every now and then let's out what almost sounds like a bark. Is she getting ready to lay? I have three hens all the same age and so far none of them have laid an egg. She sounds miserable! When the other two hens come into the coop she runs them out.