I have my first broody hen. (Daisy - Buff Orp.) She has been sitting on the same 3 eggs for about 2 weeks. The eggs are not fertile (no roos). Can I put a couple of day old chicks from the feed store under her on day 21. I only have room for 2 more hens, that's why I didn't get any hatching eggs. Will she accept them? I don't want any babies to get hurt.