Hello fellow chicken lovers. I received a small shipment of fertile eggs today and there are a couple that I can't tell which end the air sac is in. They are perfectly oval, no fat end, no pointy end. Is there a way to tell which end is which without candling? They are BCM eggs and really dark. Not sure if I will be able to tell. I will try tonight when it's dark, but was hoping someone would have some advice. I thought I read something about it, but I can't find the article for the life of me. Thanks a bunch!