What do you consider your hatching %. I hear of people saying 90% hatch, or 50% hatch and so forth. Does that mean from number of eggs you initially put in the incubator or how many hatch that have made it to lockdown?
It usually means how many eggs you initially put in you incubator. So if you put in 10 eggs and only hatch 8 then you have an 80% hatch rate. However, some other people calculate it by the number of eggs that were actually fertile. For example if you hatch 8 eggs out of 10 but only 9 were fertile then you would have an 89% hatch rate.