So I noticed after a couple of days on a towel my ducks started to lay down alot. I guess cause they had packed it down to where it wasn't cushioned enough. I put the pine shavings back in and they continued to eat them so I bought Timothy hay for bedding they seem to like it alot more and they can eat it without dying. However I noticed that it seemed like the skin on one of their feet was peeling. Is this normal? Or do I need to do something for it?