So....broody Brahma has 3 eggs (6 broody hens, so limiting the number any hen has). One egg has been mainly out in front of her for the last 2 days, the one that looked dubious on candling. Day 20 comes and a chick hatches, 'cold egg' out in front (ambient temp 70 ish by day 55 ish by night). Day 21 comes and a second chick hatches, 'cold egg' still out in front. I think that I will save her from sitting for a few more days and crawl in the pen.....'cold egg' feels very cold, but has a pip. I pick up the egg, it feels VERY cold, shake it (as I am convinced it is dead)......absolutely nothing, and mutter something along the lines of "Poor little bugger, it tried to hatch in spite of being kicked out", but decide to push it back under broody hen with a view to removing it in 12 hours. No real logic, but it felt like the right thing to do. 12 hours later I crawl in the broody pen and lift the hen (very tame and unconcerned by the intervention) and see a squashed egg.... poor little mite has been sat on too.....so I plan to pull out the mess and realise that that what I have is an empty shell. So I raise broody a bit higher to see.. 3 lovely fully fluffed up chicks with the last being ever so tiny and yellow and absolutely fine. Rookie mum is delighted with her hatch. So,I didn't think that the chick was even alive, left out for 2 days to get cold at the time it should have needed heat and high humidity....and it hatched. It's not a Brahma, it's a mutt, no doubt about that, but a very determined mutt. Tiny, bright yellow,minute orange legs, and determined to survive, and that's enough for me to keep it. So, don't throw out the egg you think is too cold......it may be alive still, and if it is THAT determined to live, it deserves to do so.