I have a brinsea mini adv that is supposed to be hatching out 7 eggs on Thursday. I love this little incubator. All I have to do is shine the light through the glass and I can basically candle my eggs (at least see the air sacs). The air sacs have all looked great, except today on one egg I cannot see the air sac at all. The egg is rocking a little. They are on lockdown so I'm not going to open it up and examine it more closely, but is this normal? I can see everyone else's air sac just fine...
If it's rocking and you can't see the air cell, it could be that the chick has already pipped the air cell. That is what I'm betting has happened and don't be shocked if you see a pip tomorrow.
