Oh man, this is so very helpful!! Thank you!! I think I finally see it! I was expecting a more obvious air cell like when you candle a few days in to incubation. I think I might be able to see it now when I candleThanks for the vote of confidence!
Good morning @kurby22!
While I have taken many photos of incubating eggs, I do not personally have photos demonstrating this, I have though seen it many times.
I often refer to this thread, it is older and you have to dig around a bit for all the info, but it is still an excellent resource for hatching shipped eggs. Has a good photo of what a detached air cell looks like.
https://www.backyardchickens.com/posts/17631705
This photo demonstrates what a fresh eggs air cell looks like, fertile or not. The larger the air cell, the older the egg in general and can be used to help determine how long you let shipped eggs settle before setting in the incubator. The older the egg, the sooner you want to get them going. If the egg is very fresh then it can be very difficult to see the air cell. If the egg cell is detached, you can actually see it roll around from side to side like the bubble in a level. If the air cell is just loose, then the edges of it will jiggle a bit when you move it from side to side. Often with detached aircells you can see little air bubbles on the edges of the air cell which is a good sign that it is broken.
Best to check with a strong LED flashlight or candler in a VERY dark room. I use the MagicFly rechargeable candler and it is awesome!
View attachment 3039533
I made the mistake in a recent hatch of setting one of my own birds' eggs with a detached air cell. I usually check the eggs, but did not this time. It was already developing when I discovered it, so I ended up incubating it upright, like a shipped egg. Although it did make excellent progress during incubation and made it to lockdown, it did not make it to hatch.
This is what it looked like on DAY 5.
It was no longer loose and had settled on the side of the egg.
View attachment 3039540
Editing my original post to add these photos I just took. Looked in the fridge and found an egg with a detached air cell. I have several broodies right now and they’re a bit rough on the eggs!
View attachment 3039565View attachment 3039566
A bit difficult to see but one photo is with the egg on its side. The other photo is at an angle.
Hope this helps!![]()

On a related note, I have some shipped eggs in the incubator and I’m giving them the first two days to settle before turning on the turner by having them in the egg cartons. By the third day is it best to start them in the turner or should I manually turn them for a couple more days before putting them sideways?

