With a fully absorbed yolk sac chicks don't need to eat for 48 - 72 hours. However, after about 24 hours when they get to moving around and start being active you will see them start to peck and eat. Just make sure you see them drinking. I have hatched orpingtons that started eating within 2 hours of being put in the brooder.
Congrats on your hatch.
Congrats on your hatch.
