chad duncan wrote:Keep the humidity up and just leave them be. There is a chance that they can bleed out so you are better off to wait. If it is still attached tomorrow, you can try cutting it at some point away from the chick but it should correct itself before then.
I second this.
If whatever it is that is connecting them to the egg dries out, I would attempt to remove it. Sometimes the membrane sticks to them and acts like super glue. If it's dried, you can just cut the part connected to the egg off. A paper towel wet with warm water can help loosen what's left attached to the chick, although if it's not blocking their rear end or anything and the other chicks aren't picking at it, it will eventually fall off on it's own.
If it's the 'umbilical cord' that is attaching them to the egg, whenever they are dry, I would take a look at their bellies (I do this regardless). Sometimes their navels don't close all the way and leaves them open to infection. A dab of betadine will help prevent infection....