Hi. Tried posting this in the ER, diseases section, but without response...and it's not an emergency that I can tell. My 6 or 7 week old Barred Rock has a small bald spot on the top of her head, probably about the size of a pencil eraser. The skin is not pink or irritated and I have not seen any of the other 3 chicks picking at her (and I watch them A LOT). She's acting just fine, other than that. Any ideas? I would love to post a picture but every time I try to upload I get error messages - so none for now Thanks.