The title pretty much says it all. I found a clutch of guinea eggs outside a few months ago and hatched 1 out of 12 guineas. It could have been because they have been sitting outside too long. I have an egg turner in a "still air" styrofoam incubator. I also have a thermometer (of course).. I really really need more guineas. I only have 4 plus one teenager. We had 25 before we had a visitor a few nights in a row from a coon (we caught him now!) I am thinking about ordering more guinea eggs online if I find a good price.. (before they stop laying..mine already have) but I wanted to know that question before I do. If I DO need something to measure humidity, what should I get?