I always prefer to monitor humidity by graphing weight loss, and usually I try to put only one type of egg in each incubator. This time I had to put 3 kinds together in my Sportsman. The Muscovy and guinea eggs are spot-on, but the chicken eggs are losing humidity at a far-too rapid (yes, duration of species incubation is factored in). Since I haven't mixed eggs before, I am very confused by this. Any suggestions, other than incubating one species per incubator, which I already know is the best way when possible?