I'd stuck a few more eggs in the incubator a week after I'd started the others (I'm terrible, I know). One had started shadowing at the low side of the air cell so I thought I'd lock them down the next morning (it was evening when I checked them). Well, I got up to find it was already externally pipped, and my humidity was 22%! But the membrane was still white and it hatched all by itself just fine.
Another chick hatched today but it had a weird, jellyish lump on the top of its head. Seriously it was like a big yellow lump of see through jelly.

I left it in the incubator and kinda suggested to DH that he might have to do it in, but I checked on it just before and it's managed to knock off all the weirdness and it just has a little wound where it was. I've put blue food colouring on to cover the wound and put it back in the incubator while that dries (otherwise it'll end up everywhere) and we'll see what happens. It's an extremely lively little thing that is not happy that it's stuck in the incubator. I've warned the kids that it might not make it, but we'll see. I wish I'd taken a photo before he'd knocked it off because I can't find anything like it even on here, but I'm a little squeamish (blood is fine, but other 'stuff', nuh-uh) and I seriously thought it needed culling. It's just very, very weird.
Anyway, hope you are all enjoying your weekends.