I have a red sex link hen that is approximately 21 plus weeks old ( when you approach her she will squat down with wings out like she is accepting a rooster for 3 weeks now) but she has not started to lay, her coop mate is a week or two older and has been laying for two weeks already. there are not any outward signs of any problems, and she doesn't show any symptoms of what i have read about of being egg bound. any Ideas?