I have a two year old hen that has a swollen face. Her nostrils are clear and her eyes are not running, but her face and surrounding areas are swollen almost like they are fluid filled. Any ideas? She's the only one in my small flock having issues. Her face and throat have been swollen for nearly two days now, that I have noticed anyway.. I have seperated her and started her on chick starter to boost protein, just in case.. I haven't the slightest idea what is going on with her. She hasn't been outside the coop and no large animals(rodents only, to my knowledge) have been in the coop. She has a scab to one side of her face, at the corner of her beak. I soaked it and peeled it, hoping to find maybe a wound, but I couldn't find anything blatently obvious. She's eating and drinking to my knowledge. Any ideas?