Can i hatch duck n marans at same time??
the potential issue is the difference in the incubation length which can lead to an issue when you reach the point of lockdown for the chicken eggs and the duck eggs are still incubating. Are you planning to use a separate hatcher or planning to hatch in the main incubator? Using a separate hatcher is one way to overcome the issue. The other potential solution is to stagger your "set" dates so that the duck eggs are set first and then set the chicken eggs at the point where their expected hatch dates have synchronized. -- (ETA - the staggered dates could be problematic as you don't know how old the eggs are at this point so waiting could push them beyond optimal hatch rate age)
Edited by Ol Grey Mare - 4/6/16 at 11:20am
With that I would set them all together so you avoid aging any of the eggs any more than they are already - then move them to the hatcher when the time comes.