I was trying to not add water during incubation unless my humidity fell below 25%. I was having consistently bad hatch rates. I finally started reading again and found a thread where someone measured humidity under a broody and found it to be between 42-48%. My last hatch, I tried to keep it...
Here, I found it, from a post above:
And actually I've never shown a single one of my birds in 97 years and counting (though lets never say never just yet); though many have been shown by customers over the years.
I believe one of his posts said he is 97, but I could be wrong.
I am really enjoying the information you have to pass along, Mr. Miller. Thank you for sharing with us!