I just got a wireless thermometer that has a remote probe that measures temperature and humidity, including max/min. I put the remote probe in my coop so I can see how cold it is out there, and how humid. I put it next to the roost, near the top of the coop. http://www.amazon.com/Weather-Chann...?ie=UTF8&s=home-garden&qid=1226194586&sr=8-40 I have a second probe that only measures temperature. This is in a shaded location on my front porch, to measure the outside temperature. So my question is -- does anyone know of a chart or resource for knowing what combination of low temperature and high humidity is bad for chickens? With this high-tech set-up, I could monitor things and take steps to improve conditions if I start to approach harmful temps/ humidity.