I now have two thermometers with hygrometers in separate coop areas, and it's interesting. The area nearest the 'run' with it's excellent ventilation, and only a few bantams roosting there, always has lower humidity than the one in the back of the original coop section, with about thirty birds roosting every night. Different by five to ten numbers, at most, and never any signs of condensation anywhere.
Of course it's humid outside too most of the time!
Tweaking things a bit, but no major projects are going to be happening over winter. This has been the same set-up for five years, and no problems during winters, so it's probably fine. And moving the waterer outside of the more humid area can't happen until the run electric outlet is fixed...
Mary