We had a 2 chickens collecting eggs from all over and put them in an incubator so she couldn't get anymore. After candling them we threw out the ones that were infertile and ended up with 13 eggs. That was on... March... 25-27th I think. How long should I leave them in the incubator? 6 of them hatched and every time I start thinking no more are going to hatch out pops one chick.. then it goes silent again. I don't want to throw away the eggs if they may hatch but I don't want to leave them in there if they aren't. The last chick hatched 2 days ago, 2 days before that 2 chicks hatched, 3 days before that 1 hatched and 5 days before that 2 hatched.