I have two 9 month old hens with my 9 month old Tom. He's been strutting quite a bit (I don't know if he's done the deed or not) and I just yesterday saw one of my hens on 2 eggs. The other hen today has been over there and looked to be helping in nest building. Now I have a house and covered area set up in their pen but of course they chose a corner in the dirt where they can get rained on. Should I move them to the covered area with hay or just leave it be? And I know they typically collect for about a week before sitting so how long before I should worry about collecting to incubate? I also have no idea how to tell if they're fertile unless I try them in the bator for a few days then candle.