Help what is this?

[Peacefulfarm]

This chick was born today and this was attached to cord in egg. Chick is struggling to stand.

 

[nuthatched]

The yolk is still absorbing, put it back in the incubator for a while

 

[Project Blue]

I'd clean it before putting it back and also fluff some paper towels for the chick to lay in so it doesn't rupture. Or sterilize thread and tie it off, then give supplemental care for a day or two.