Maggie is feeling great, eating, laying but has this odd swelling under her right eye. I tried Tylan 10 injections for 5 days in case it was the beginning of CRD or possibly an infection of some kind. Any ideas on something topical I might try. All the hens(including her 2 sisters) from the family where I bought her, a few months ago, are fine. When I look at the first photo I took of her while she was still in the box, I can see a very, very slight swelling I hadn't noticed- meaning, I guess this swelling has been going for about 2 months. Thanks so much in advance.