I couldn't find this in any of the other topics. I am hatching a batch now and have had only had two issues. One pecked a hole that had some blood then died and one that I saw foam (just a small amount) coming from the openings of the shell. It hatched on its own like the others, but I had to rinse it off because it was drying stiff (like egg whites do). It seems to be fine now and the only way I can still tell a difference is the top of its head(that I couldn't rinse well) is still stiff instead of fluffy. What makes that happen and does it mean the chick isn't health, etc. Thank you!