Tomorrow is lockdown, 1 egg seems underdeveloped but alive

[Jmcggnj6]

Tomorrow is lockdown I candled a few last night and noticed one of my candy corn polish eggs was not developing like the others.There is still a clear area at the bottom end of the egg that I can see veins running through and the embryo is closer to the top of the egg near the air cell, and is very much alive and moving around. The rest of my eggs are dense and difficult to see anything other than the air cell due to the large well developed embryo. I guess my question is what would cause this? What should I expect? And how long should I leave it if it doesn't hatch with the others which I know it probably won't. :-( Have any of you had this happen before?

 

[ChickenCanoe]

You know they're alive so just leave them till they hatch. I've seen unfilled space at the bottom on day 17-18. If they were alive they usually hatched.
Slow developers if others are on time could be from: old breeders, large eggs, eggs stored too long, inbreeding or weak embryos.

 

[lazy gardener]

Or that egg got stuck at a cool spot in the bator.

 

[b2c2chicks]

I had 1 do this last Thursday on lockdown. It never hatched and I'm sure its gone. I suspect my incubator temp was off...The front eggs hatched perfectly, the back eggs didn't hatch at all. The thermometer read 100.6 in front, and 97.0 in back. It's a friggin magicfly too! So it's small...not sure what happened.

 

[Jmcggnj6]

I have 2 thermometer/humidity gauges, one that rests inside the incubator and one that is probe style, the probe reads 99.5 and is along the outer edge of the incubator and the other reads 100.6 and is smack in the middle. It is a forced air incubator with an auto turner. I am just perplexed...so weird that it is still moving but only taking up half the egg.

 

[ChickenCanoe]

I had 1 do this last Thursday on lockdown. It never hatched and I'm sure its gone. I suspect my incubator temp was off...The front eggs hatched perfectly, the back eggs didn't hatch at all. The thermometer read 100.6 in front, and 97.0 in back. It's a friggin magicfly too! So it's small...not sure what happened.

Since you now know this, in the future rotate the eggs from front to back every couple days till you figure something else out.

 

[b2c2chicks]

Since you now know this, in the future rotate the eggs from front to back every couple days till you figure something else out.

I will, if I ever use that incubator again. I have another for larger hatches. They all did great up until lockdown, other than the small underdeveloped embryo. It seems like it was stable days 1-18. Sometime around 19 or 20 something happened, because those 4 eggs all stopped at the exact same stage. I'd be afraid to risk it again.

 

[Torripine]

Tomorrow is lockdown I candled a few last night and noticed one of my candy corn polish eggs was not developing like the others.There is still a clear area at the bottom end of the egg that I can see veins running through and the embryo is closer to the top of the egg near the air cell, and is very much alive and moving around. The rest of my eggs are dense and difficult to see anything other than the air cell due to the large well developed embryo. I guess my question is what would cause this? What should I expect? And how long should I leave it if it doesn't hatch with the others which I know it probably won't. :-( Have any of you had this happen before?

I have the same thing happening with one of my eggs it’s a small hatch the temp is consistant he’s kicking around in there but the other egg i have from the same hen has an embryo twice the size so I’m not sure,he’s definitely still alive and was progressing at the same rate developmental that I could see at all my checks, hopefully just a unusually small chick lmk if everything goes alright with yours tomorrow day 18 for them so I’m just gonna cross my fingers!

 

[ChickenCanoe]

Could it be a cool zone in the incubator?
It helps to rotate the eggs to different parts of the incubator from time to time if there is any chance all areas aren't the same temperature.
There is little else that can cause it other than an older egg but that would only slow it down by a day or two. If they went in the same day, they should all hatch within 2 days of each other. All things being equal, all fresh, proper temperature and turning, they should hatch the same day.

 

[Patiocoturnix]

I have the same thing happening with one of my eggs it’s a small hatch the temp is consistant he’s kicking around in there but the other egg i have from the same hen has an embryo twice the size so I’m not sure,he’s definitely still alive and was progressing at the same rate developmental that I could see at all my checks, hopefully just a unusually small chick lmk if everything goes alright with yours tomorrow day 18 for them so I’m just gonna cross my fingers!

Just so you know the op is not going to be able to tell you what happened with their egg this is a 5 year old thread and the op has not been seen in 5 years.