shows how to mix flocks inside a multi stage incubator. To start with, always tray eggs from youngest to oldest. As the example shows us, there are
two racks of eggs for every incubator (1 through 20). These will fill 10 incubators. The letters on the side indicate what set is going into the incubator. Notice that in Set A the racks are in perfect order whereas in Set B Rack 1 starts in Incubator 5. In Set C, Rack 17 starts in Incubator 5 and then back to Set A. This provides the best mix given the egg supply.