I have a duckling that has just hatched but it appears as if it has not absorbed all the yolk yet. There is an extremely small amount sticking out of its navel and a small amount of blood. This duckling was in no way assisted in hatching. I have not moved it from the incubator yet as I am unsure what to do. It is active and peeping and looks like it wants to get out of the incubator and join its siblings. Has this happened to anyone before or can anyone offer some advice as to what I should do, or if I should be worried? Thanks!!!