We had some broody chickens sitting in some eggs layer by our ameracauana chickens. We had to help it hatch a little bit following directions we found in this page. When it was all hatched we noticed a yellow bulge on its bottom area. It looks kind of like a golf but have veins in it and there is some white yellowish hoop trailing off of it. Is this an abnormality? Or is it normal? We have never seen a chick this young before. The other hatched sometime in the night and we all fluffy and lively when we found them under their momma. What should we do?