I have two ducks eggs that I'm hatching and one of them was set to hatch yesterday but hasn't made any progress, I have been avoiding turning it over so I don't mess it up but today I looked at the bottom and noticed this weird spot on it. When I candle the egg I can see it moving against the air sack but it doesn't look like a bill. Could the duckling be set wrong and is trying to pip externally? The eggs are very small and therefore the ducklings are very small so I'm worried about them. Here's some pic of the spot on the egg.