So after a very poor hatch of rouen ducks 14 went in and we got 3 ducks. I am just going to use the Hova Bator for duck eggs it is full with 40 rouen eggs. Last time i had chicken in there so this time the chickens are in the new home made bator. The ducks in hova bator temp 99 humidity 60. They went in at 4 pm So anyone trying ducks post away.