She's not covering the eggs very well, is she? I noticed that in some of the other pics as well, but I assumed that was just because you'd just put the eggs there and she hadn't gotten them under her yet. But there is still at least one egg that looks like she is completely ignoring it. If she changes around which eggs she ignores and which she sits on, they might go cold and die one at a time.. If she really does ignore some of the eggs, I'd take away all eggs she is not sitting on, to give the rest a better chance.
Yay! Broody jap hen discovered today - Page 2
Today was 30+ degrees Celsius so I don't think it's a worry about it getting cold, it's 9:50pm 26 degrees now. Do you think it'll be ok? I've not incubated before, I'd have to look up pref temps etc.
Incubation temp for most species is somewhere around 37-38 degrees Celsius - I don't incubate either. But of course, the closer to that temp, the longer the eggs can survive without being incubated.
Personally, I wouldn't eat an egg that has been incubated for more than a day, but that's just because my brain wouldn't like it, there is nothing dangerous about it. I even read about something called 'Blaut' or something like that, where people eat eggs that have been incubated for a week or so.