I was starting to wonder if I owned a flock of non laying chickens. They are 22 weeks old, and three had started squatting about a week ago. I went out into the coop to clean it today around noon today, and was literally shocked to find a little egg in the nest box!! I believe it was from either one of my speckled sussex or my barred rock. I am SO excited!! Didn't think I would get so excited about an egg!!