Yes that’s yolk sac
That’s good news
Maybe a few hours and it should be absorbed
Keep baby in that cup on dry paper towel till it’s absorbed and then it won’t rupture it
I had one I had to help that had a little yolk like that. Took 2 hours and baby was great. She is now a year old :)
Only reason I asked was usually they don’t zip until absorbed
If it’s red then it maybe something more
More pics may help
I have only ever hatched ducklings but I imagine things should look the same not having anything coming out if the belly
Did you help this baby hatch ? Or did it do it on its own ?
Could they be the yolk sac not intestines ?
It’s hard for me to tell in the pictures if that’s yellow or red