Had a single peachick hatch last week on the 13th and 2 more on the 19th. The later ones are twice the size of the first one and now it won't eat. I tried egg but to no avail. It was getting a fecal mat but it does have probiotics and electrolytes in water. Not sure what can be done. Perhaps naval ill? Has an odor so thinking what is the problem. It is an unrelated bird that I ordered from hatching egg so hoping it will survive darn it.