Help! My chickens face is swollen only on the left side. There is no discharge and she is not wheezing, or sneezing. She is still happy, eating and drinking as usual. I do see a little black dot near her beak and wonder if she was stung by something ir if this could be an injury? I have sprayed this side of her face with vetericyn 3 times today and kept an eye on her. The swelling has not gone down. Any ideas? I have never had this happen before.