I have had chickens a long while but I am now just starting to build a diy incubator. My question is what are some recomended and humidity levels? I have done a lot of research and the temp needs to be 99.4 F-100.2 but what I have found is a lot of people and websites saying a lot of different humidity levels from 35 to 65% on day 1-18 and 70-80% from day 18 to hatch. I am wondering the humidity seems to be my question? Where should the humidity be for chickens?