I keep mine around 75% during lock-down. Last hatch all eggs hatched but one and it had partially zipped and expired, so nearly 100% hatch. I have more due to hatch Tuesday. I did have a few blank eggs. I recently changed some of my breeding pens around and wanted the females to clean out. I put another male with certain females that I want him to breed with for hatching. I just put some of those eggs in the incubator. I bought some Single Comb White Leghorns at a show in January. I recently hatched out some eggs from them. I think I got taken because some of the chicks turned out to be Rose Comb with some black in their wings. Somebody is not pure. There is a bird I suspect. A female whose egg is more of a cream color rather than the nice bright white like my original SC White Leghorn eggs are. I'm doing an experiment and switched the males around to see what I get.
