Is humidity supposed to drop?

[playswithfowl]

Today is day 20 for me, I already have one hatched out early and at least for that have pipped. My problem is that the humidity is dropping from around 75-77ish to 69. Does the humidity normally drop when the eggs begin to hatch?
Thanks,
AJ

 

[Katy]

Usually it goes up....but I think 69 is still fine.

 

[Tuffoldhen]

Like Katy says it's fine....mine hatch out around 65 to 70%.....don't open the bator....