Granted, a lot depends on temp outside, snugness of coop, presence of heating, but just wondering for the sake of curiosity how quickly I would have to collect fertile eggs after being laid to have a chance at hatching some? I'd like to try my hand at hatching. It's about 20 something out here, the coop is tight except for a pop door that's open opposite the nest box, insultated walls and floors, 4 x 6 coop. I realize it would be just a guess, but anyone know approximately? 5 min? An hour? Few Hours? Sometime that day? How cold can eggs get and not be affected? I've not yet found one frozen out there, collecting daily (judging by the spinning test for hard boiled eggs... frozen egg should react the same way). But the eggs feel quite cold when I find them.