I'm new to incubating eggs. I've had 10 hatch. One is still in the shell. It's got a pretty big hole in it. I see it's beak & foot is hanging out a little. It chirps at times. It puts it's foot out a lot & pulls it back in. I can also see part of it's abdomen. I don't know what to do. It's been like this for a pretty long time. I don't know when to intervene or even how to. Thanks in advance!