- I like the last boy's colour!
I had a hen leave the eggs for an entire day and give up on them on day 12-14 (didn't keep track of the hatch date
) and now they are under a broody silkie and still moving (think they will hatch this weekend - getting full). So eggs can definitely cool down for quite some time and still be okay. An hour shouldn't hurt the eggs unless they are in lockdown (after day 18). After day 18 the hens should not get up to eat, drink or poop. They know this and don't - so let them decide. If they decide it's okay - it's okay. I still refer to any egg after day 18 gestation as 'in lockdown'.
Getting her settled before day 18 is important. You want her to feel comfortable where she is going to hatch the babies. I usually move them on day 16 if I move them at all. I like to give them kennels to hatch/set in so they can be easily moved (kennel and all).
Some of my hens hold their bowels much better than others. I have one hen that will defecate even if I keep food and water out of her kennel. I even kick her off for a few minutes after day 18. Better than pooping all over her eggs, right?
Shrink wrapped happens before internal pip usually, but can happen after. I once lost an entire hatch to it when I opened the incubator on day 19. It was just one day after lockdown - didn't think that would do anything. I was showing someone that was visiting what candling looks like. Very stupid. Out of 30 eggs - 2 hatched.
Those 2 are very special to me. Miracle babies!!