I have a chick that has been hatching. It was halfway zipped and I checked on it, but it was crusted over. It looked like the chick had busted the yolk. So I helped it out and cracked the shell the rest of the way. It immediately went to kicking and trying to push itself out. It was covered in this gooey film. I didn't pull, but I could tell that the hole in the abdomen had a little left to close, about the size of the tip of a ball point pen. I've never encountered this before and dont know exactly what to do. The chick has pushed itself half way out and the bottom of the shell is still there. It seems really strong all things considered, its a fiesty little thing. Has anyone ever encountered this? What was your experience?