I've been incubating a duck egg I found after something destroyed the nest. I have so far had great success with just my heat light and making my own humidity. The duckling has grown according to all charts and moves when I put it in water. We are on day 27 and the duckling hasn't broken the shell. Am I doing anything wrong? Is it too soon to hatch? What do I do from here? I rescue ducks all the time and release then back but this is my first egg. Any advice is welcome!!!