I'm assisting a silkied Ameraucana chick out of the egg (these particular eggs are problematic). As soon as I started peeling back the membrane, I hit this thick layer of pale yellow powder. Lots of it. The chick appears to be healthy from what I can see of it. The powder is on the inside of the membrane and is dry. I have never seen anything like it. There is no odor at all. Any idea of what it could be?