Hello, I have an ongoing hatch right now with 10 barnyard mix and 7 serama. I've got 7 mix and 1 serama so far, all still drying off in the bator.
1 of the mix chicks has a bald spot on it's back, almost like the down stayed with the eggshell. Is that normal?
I've hatched a few button quail and attempted goose eggs, but was unsuccessful. This is my first chicken incubation.
I've been dry running the bator in my basement which turns out to be 35-40%. On lockdown, I raised humidity and it is about 85% now. I used an automatic egg turner until lockdown. Incidentally, I didn't expect chicks for 2 more days. Temps run from 99.5 to 100.5 but remain pretty consistent. ( which is why the bator is in the basement, I previously had wildly varying temps due to outside temps, day night.
So what's done is done, but would you advise anything to do differently next time?

You seem to have everything under control so far. You might want to take the eggs out of the turner before hatching to eliminate possible problems with chicks getting tangled in it.
Where in WI? Family there.