Figuring out hatch day

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This was on Thursday during our science lesson.

Air cell looks very small..
 
Has the thermometer ever been checked for accuracy?
Well, small air cells at hatch time often lead to chicks drowning before they can hatch. What was your humidity for the incubation period?


Humidity was 30 to 40% before lockdown and about 60 during lockdown. I followed directions on incubator in filling tray one and filling tray 1 and 2 during lockdown. I had a digital thermoter and a mercury themoter on top of the eggs. They both read the same temp if not off .5 of each other. Is there any hope or should I plan on buying some chicks to pretend they have hatched?
 
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Humidity was 30 to 40% before lockdown and about 60 during lockdown. I followed directions on incubator in filling tray one and filling tray 1 and 2 during lockdown. I had a digital thermoter and a mercury themoter on top of the eggs. They both read the same temp if not off .5 of each other. Is there any hope or should I plan on buying some chicks to pretend they have hatched?

As long as there is movement, there's hope. I would double check the hygrometer for accuracy. 30-40% is a good range for standard eggs. I would expect well developed air cells. Are the shells extremely thick?
 
As long as there is movement, there's hope. I would double check the hygrometer for accuracy. 30-40% is a good range for standard eggs. I would expect well developed air cells. Are the shells extremely thick?

They were moving on Friday before lockdown. How can you tell if the shells are thick? Should I candle again?
 

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