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Premature hatch

post #1 of 3
Thread Starter 
When I went to lockdown the incubator yesterday, I discovered that a few of my Guinea eggs had pipped several days ahead of schedule. After >24hrs with no further progress, we carefully removed some shell from one and placed it back in the incubator. It had not gotten through the outer membrane. We later opened the membrane (only a very tiny amount of blood in one area that we avoided). The chick was nearly lifeless and had not yet absorbed its yolk sac!!! Why then had it started hatching the day before?! We left the others alone.

FYI, temp during incubation was 99-100, though one day it got up to 102 briefly. The humidity has been around 50-60% during incubation, but we bumped it up to 70% at lockdown. Also, unfortunately we learned that we had the eggs in the turner upside down for the first 10 days. We righted them but worry this caused issues.
post #2 of 3

they should be fine but just leave it alone for the time being.

post #3 of 3
Thread Starter 
Well, that chick did not make it and I do not expect the others that started hatching on Tuesday to make it either. Once I saw that the one still had a yolk sack I did not intervene to help the others. I am baffled as to why they would begin hatching before they had absorbed the yolk sac. Can anyone offer any ideas as to why these eggs started hatching five days prematurely?
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