Wondering if size of coop has anything to do with when hens lay. I have 3 Ameracaunas, only 1 laying, but don't know which 1. They were bought same time & place, so I think they are all same age. Coop I have has 2 next boxes, egg always laid in same one, other nest box is used as "litter" box, but every morning, 1 perfect small blue egg is in same nest box. Any thoughts?