Okay, goose egg supposed to hatch on the 15th or maybe today. Sometime nowish. Air cell grew dramatically within these last few days. Like a lot. I put my ear up to the egg and I hear this clicking noise. Its not a squeak it's almost like a thudding mechanical noise. What is it? The chick almost looks like it's in the air cell... I can't tell. It's past the little line now, but I don't know. Thoughts?