Thanks for the reply. I think it's only around 65% today but it was higher yesterday. I turned on the fan but I doubt that would help much. I have another hen sitting in the same coop. I'm hoping all goes well with her.
I've read everything I can find on this subject but it doesn't apply to my situation.
I have a broody hatching. She is a good proven broody and has hatched and raised chicks 2x.
She has had three chicks partially hatch. (Sorry no pics. I just can't touch my phone to take a pic while...