My son has just hatched his third batch of chicks. These eggs came from the local auction. We had one hatch today that had a large reddish blob. (For lack of better term) protruding out of what I have determined is the belly button. It is quite lively and has gotten out of three "diapers"we made for it (trying to keep it contained while we figure out what to do). It pulled much of its intestines and insides out. We finally took a q- tip, took the cotton off, dipped it in anti biotic ointment and tediously got all but the original red "blob" back in. I'm trying to determine if it could possibly be the yolk sack, or if it's something that needs to go back inside. I thought it might be liver, but it just didn't look right. Any help would be appreciated. I honestly didn't expect it to make it at all, but it seems to have a will to live and my son is intent on it doing well. I'm willing to try.