One of our chicks hatched about 6 hrs ago. It looks small and has a bald strip that runs over the head like a part in the hair but it is wider than a part. I noticed what I thought was a pasty bottom so I took it out to have a closer look even though the chick was not completely dry. It looks like a brown crusty wart. Did the area where the umbilical chord was connected not close properly? The chick looks a little weak but seems to be holding its own. Is there anything I can do for it?