I have 7 chicks I just hatched out of an incubator that are 3 days old. 6 of them are doing great but the last 1 to hatch is only 1/2 the size of the others and doesn't want to eat or drink water. It had some hard poop stuck to its little butt so I soaked that off and it pooped a little while I was running warm water over it but when I gave it some water it acted like it was choking. HELP!!