I don't know the temp of my refrigerator but I am trying it. I have a chicken gone broody,,,and the only fertile eggs are some duck eggs I put in refrigerator a week ago. I can get any more fresh ones because she got killed by something last week,,,the only female.
They have been under broody chicken for a couple of days. I should be able to candle them in a week or so,,and see if the are forming.
I have asked this question before,,not on here,,,to people that have chickens I have met. And it seems ,,,,some say ,,YES and some say NO. Why is that??? Either it can be done or it can not be done. I believe that it can ,,,from the post above.