Okay, so I got one of those nifty wireless weather stations and put the sending unit in the coop. This one will show humidity and so far in2 days since putting the 5 Silkies in the coop it is at about 58%. I know there is someone on here that has figured out what the correct humidity should be in winter to help keep from getting frostbite or anything else frozen. Right now I have an old style waterer, but as soon as my nipple waterers get here I will be switching. I know water sitting in a bowl will definately add to the humidity level. I will try and post pics of my ventilation from home tonight.