Incubating (for a first time) 2 silkies 2 Poland 1 Friesland fowl and 1 orpington, today 7th day. Problem: orpington unusually large literally grows in front of my eyes very pronounced and NO AIRSACK whatsoever ???? Until today it's almost over half covered meaning dark that can't see through??? I would have thought it had for some reason started earlier but where is the airsack? I'm using own made incubator ordinary lamp checking temp on top of eggs with meat probe thermometer every now and then, turn at least 4 times a day, no sign of bacterial dots. What's going on? Some mysterious deciese? Is there anything I can do about airsack? Humidity 55%><5 Other eggs within normal growth stage Friesland shows bacterial dots and other Poland got starcrack but covered it with candle vax... My incubator methods maybe dodgy but can't wait to buy proper incubator I want to give it a shot, really AND it appears to be stuck on the other side...things are not looking good with orpington. When would it be appropriate to remove it? One more thing, there appears to be dark "African map" where the airsack should be....aaarrrgh..