My bantam aka " baby chick" (my kids named her lol) has been sitting on 4 eggs for a week. Only to have gotten off them for a few hours and they got cold. She is back on them now.. Is it possible they could still hatch? Also she somehow added a new egg to her nest yesterday and is now sitting on it as well.. Should I remove it or just let it stay? This is our first time being broody so I'm very new at this. Thanks!!