Tony O
Chillin' In The Garden
If you gotta put both duck and chicken eggs in the same incubator, I would do both at the same time. Not to much humidy for the chicken eggs that way. The chicks would hatch a week ahead of the ducks. They'd add humidy when hatching, about the right time to start raising it for the duck eggs. After removing the baby chicks, you can add more humidy for the last week of incubating the duck eggs. Should work out just right.