I think the eggs are pekin duck eggs. I was told they hatch at 21 days. I candled them and they seem to be a little bit behind my chicken eggs in development. I saw on the internet where people said both 21 days and 28 days. Which day is it? I set 2 duck eggs with 6 bantam eggs and all the eggs are are alive and moving around when i candled them. What do i do if the duck eggs take 28 days? Is it hard to stagger the hatch? I am using an auto turner