So my bantam is sitting on some fertile eggs I got for her, and my Australorp always lays on top of her. Last night the nesting box was overturned with one casualty, but the remaining eggs were cold when I found them this morning. I've put it all back and the bantam is happily sitting again, however is this a waste of time seeing as they all got stone cold over night? (it's winter in Oz). Is there any chance they've survived?