We have baby silkies. I have hatched the first 12 out with no problem (except for the occasional help out, because the under leathery shell seems too strong, why?). The 13th died, almost made it out, but the leathery undershell held him in. The 14th came out last night. (Egg says it was from Aug 27th.) He had a large lump on top of head and one on side of his neck, next to head. Both were almost as big as his little head. I wasn't sure if he'd make it through the night, considering, but he's alive this morning. Lumps still there. I've heard people talk about chicken vaults, is that the feathering on top, or is that a lump like this? And what could be wrong with his neck. With these last two having problems, I'm hoping my last 6 aren't going to be the same!