“Standing up” egg still has not hatched

[PoppeCountryEggs]

It is the afternoon of day 22 on my chicken egg hatch. Since around day 16 I noticed one of my eggs “standing up”. My incubator is the type where the eggs lie down and are turned on rollers. The egg’s blunt end just kept popping up into the air, never seen anything like it. I read up about it and it said that is not abnormal or unusual. So I kept it in the incubator for hatching. All other eggs have either hatched or pipped. The “standing-up egg has done neither, but is still standing up. Should I conclude it is a quitter? Did I get the wrong info (is an egg standing up around day 15 or 16 a sign of a quitter?)

Or should I just wait?

Curious to hear from others who had a “standing” egg.

 

[Debbie292d]

I've hatched many hundreds of eggs and never heard of this.

Did all of your others hatch fine? If so, try candling it. If you don't have a bright flashlight, there's one on your phone people use.

 

[Ridgerunner]

All other eggs have either hatched or pipped.

You are in the middle of the hatch. Don't touch that egg yet.

 

[Ridgerunner]

I have no idea what you are seeing but my incubator is not that type. Not all eggs hatch at the same time so give it time. I've had some hatches that were over within 16 hours of the first one hatching. I've had some with a broody hen or in my incubator that were into the third day after the first one hatched before the hatch was over.

As some of your eggs have pipped but not hatched it is possible that egg is just a little late. You are still well within the window where it could hatch.

Are your rollers still turning? I'd turn them off. They are not doing you any good at this stage if the hatch.

 

[PoppeCountryEggs]

My rollers are out since lockdown, and it is now evening of day 22 and and out of 23 eggs, 21 hatched without problem (at the time I wrote the original post, 2 had pipped but not hatched yet, they have hatched since).

I noticed this one egg tipping up onto its pointy side on day 16, before lockdown, and found this info on Google:
On day 16 of incubation, a chicken egg might appear to be "standing up" in the air due to the development of the air cell. As the chick develops, the air cell at the blunt end of the egg gets larger, allowing for better breathing as the chick prepares to hatch. This air cell can create a buoyant effect, making the egg appear to stand up on its side or even on end.

I candled the egg again before lockdown and it appeared normally developed, just kept popping up when trying to lay it down, exactly like a roll-poly toy (I am aging myself).

Now all but that roly-poly egg and one more egg (that I was not entirely sure about at last candling, but put into lockdown anyway) have not hatched.

I will candle both eggs again tomorrow, on day 23, but will put the 2 lately hatched chicks into the brooder with the rest of the clutch once they are fully fluffed up. Will give an update on the rolly-poly egg.