Another baby and a yolk question.

Morning check on babies and cleaned out the tub and refreshed paper towels and noticed that the baby who has had it head out since yesterday morning was still in its egg, but had what I figure is the yolk sticking up. Its rubbery and seems firm. What does this mean, first time I have encountered this, and what should I do? Thanks.

http://i108.photobucket.com/albums/n...ps623c0937.jpg
http://i108.photobucket.com/albums/n...psf5772c12.jpg

Any thoughts? Does this mean it has a twisted umbilical (sp?)? Do I need to do anything for the baby? Thanks

The veinwork surrounding the remainder of the yolk looks like mine do just before they come out the egg. It may absorb a little more and will probably be out within 12 hours.

I checked on it again and it was out of the egg :) Picked it up and looked it over and it seems fine, so now just waiting for the other 2 to come out of their eggs, they haven't even stuck their heads out yet.