I have three wee indian runner ducklings and one has a bad leg. It has been out of the egg for just over 48 hours, and it is not improving. It is not splayed, it is tucked up against the bird like it is resting on its belly. I've tried gently extending it, but it won't move and I don't' want to break it! It cannot walk, and ends up on its back when it tries... Any ideas?