I have noticed that there seems to be a higher instance of deformities the longer they take to hatch. For example...I had a coturnix quail hatch due 1/23, and most of the eggs hatched then. But there were a handful that I left in the hatcher. My mistake, I added more eggs to the hatcher, the newer ones to the left of the old ones in the carton, but nothing to distinguish them. Well, this morning 1/26, I had one that I am sure is an old egg (it was to the far right of the carton) hatch. It is VERY wet, looks like a weeble with its big fat belly, and both feet are deformed. All of the other dozen chicks are a-okay. Out of ALL the eggs that I've hatched this past year, I have noticed that 99% of the late hatchers (> 1 day overdue) have problems like this. Has anyone else noticed this? Do you have any other "ah ha!" thoughts similar to this that relate to incubating and hatching? I'd like to hear them.