Chicken hen successfully hatched 9 out of 12 duck eggs. One duckling has both splayed legs and a very weak droopy neck. I can tape up the legs, but then the ducky is flat out on it's belly with both legs behind it. Is drinking when assisted and will try and eat but is certainly not getting as much to eat as the others. Has anyone had a duckling this bad off survive? I don't know how to keep it's legs from flipping out behind it. It can manage to get under the hen for warmth but I don't think it will be able to keep up with the others.