I have 2 hens on 18 eggs. They are co sitting. They have been really good and take turns for maybe 30 minutes off...but one is always on. The first hen started sitting the night of April 4th...other hens kept laying eggs in her nest. There were 24 eggs under her, and the other hen had started co sitting around the 9th. I moved them into their own coop around the 10th to stop the other hens from laying in their nest. I put the left over 6 eggs in my bator. Nothing has hatched..and yes I have roosters! Eggs are fertile! I think that it is strange that not one egg has hatched...even in my bator. I will give it a few more days, anyone have any ideas why none would hatch? The main question is in a few days when I take the eggs what would happen if I slipped a couple of chicks from the store under the hen? might she accept them? The little cochin hen is a real good mom. The chicks might be a week old already. Thank you!