I just found one of my chicks swelled up so big it looked like a ballon to the point that you could see the skin and light shining through it from the sun. At first I thought it was fluid and I wish I had gotten pictures. When my wife aspirated the chick it literally deflated. As soon as she did that the chick started preening and eating and drinking like nothing ever happened. I've never seen nor heard of such a thing. Any ideas what happened here and maybe what might have caused it?