Currently I have 3 eggs in an incubator and all of them sometimes rock and wiggle, but it's AT LEAST day 21 and none of them have pipped! What's taking so long? When are they going to hatch, it's driving me crazy. My incubator is still air and I have been keeping the temp at 99.5, but I read somewhere that in still air incubators you should keep it higher. Could this be a factor in why it's taking them longer to develop?