congrats on the hatch, its part of the cord that's holding it to the egg. if the cord is wet at all, break away as much of the shell as you can. if its dry and threadlike you can cut it. do not just pull it apart.So today one if my babies hatched! I missed it I heard it all day thinking nothing would happen! I know I am supposed to sit on my hands it's so hard it looks like something is stuck and dragging the shell around. Is that the cord? I've never done this so I am so excited!