I am wondering if it is possible to introduce MORE eggs under a hen who is setting. I have a hen currently who has been sitting on her eggs for about a week, and although she is doing wonderfully for some reason she has only 2 eggs. She is a white pheonix hen, and as far as I know this will be her first clutch. I was wondering if it is possible to (maybe the next time she clutches) take refridgerated eggs that were collected from the coop (which would be fertilized, and THEN refridgerated). How long can I keep them in the fridge until putting them under the hen?