I have 4 hens sitting2 just started 1 has been sitting almost 3weeks and the other one has been sitting for 2 weeks. One of the hens that just started took the eggs that are about to hatch so now the other hen is on new eggs. Can I put some 4 day old chicks under her? It's hot here and I don't want her sitting another 3 weeks. I did put her eggs back under her but the other hen took them back.