Air sac

[ChickyChickymamma]

It won't hurt to give them a bit longer at a lower humidity. The 18th day you see on egg air cell charts shows where the air cell is at when it draws down in preparation for the chick to pip into it. If your eggs have been a little on the cool side they may take a little bit longer to do that. Being a bit cooler also means the egg loses a little less moisture than they would at the ideal temperature.

Thank you!

 

[ChickyChickymamma]

I think waiting until at least draw down to increase humidity would be fine and would give the air cells a bit more time to grow. Waiting until internal pip is also a good plan.

What is draw down

 

[JaeG]

What is draw down

It's when the air cell draws down on one side giving the slanted look.

 

[aart]

My method might be a little unorthodox, but I usually wait until they pip internally before I raise humidity.

I wait until external pip.

 

[casportpony]

@ChickyChickymamma, how are they looking?

 

[ChickyChickymamma]

Hi everyone! Wanted to update you all. 2 have hatched so far today. I don't see any external pipping yet on the others but at least they have a buddy out while in the incubator stumbling around and climbing the other eggs.

 

[JaeG]

Yay!!! Remember to take some photos for us when you get a chance.

 

[LikeTurkeys]

Hi everyone! Wanted to update you all. 2 have hatched so far today. I don't see any external pipping yet on the others but at least they have a buddy out while in the incubator stumbling around and climbing the other eggs.

Congrats! Somehow this didn't make it into my alerts, I'm glad you have at least 2 hatched!

 

[ChickyChickymamma]

My girls have named them mango and strawberry

 

[ChickyChickymamma]

Already photogenic