Hawkeye that sounds like a humidity problem to me. Recently when I discovered my auto waterer wasn't working I had several eggs that ended up that way. Makes you very sad to see a perfect little chick that just didn't make it. Other than that it could have been any kind of problem that occured while it was developing. I had a terrible time hatching silkie chicks. Then I just started leaving them for the hen to hatch and she didn't hatch any. I haven't even tried recently to hatch any. They kind of fall into that category of problems with bantams. There is just something about them that makes them a little weaker and it doesn't take much to mess them up. I worked my rear off today. I'll write about it later. Now I'm just going to go put the ole feet up!.