Hello, I'm interested in seeing what the best technique is for hatching call ducks. I have a circulated air incubator with an automatic egg turner, that was converted from being "still air." Is circulated air better for hatching ducks or still air? I've hatched ducks successfully in the past with still air, but I'm worried now about humidity with my newly converted circulated air incubator. I live in Arizona so the air here is very dry.