I have never heard my eggs cheeping until they were internally pipped intot the air sac, I do remember some said they can cheep a few days before hatch thought so maybe someone more experienced can answer thatI don't know how long the egg was abandoned. It was cold to the touch.
How long after they cheap do they come out?
don't mean to laugh, but that's quite a visual. I think the damp towel and heating pad could work. Do you have a brooding lamp and a thermometer? That might work better than the heating pad, IMHO, because it wouldn't be setting directly on the heat source. Seems to me a quick brooder set up in a tote or box of some kind with the heat lamp and keep the temp at 99.5 would work. The wet towel is a good idea too. You'll probably need the brooder set up anyway because the hen may not take the chick in when you reintroduce it. If you don't have a heat lamp you could use a light bulb, but it has to be incandescent to produce the heat.
