My lovely chickie's right side face is little swelling. Not a lot but it's enough to notice. She didn't come to me when I called her and she was already in the coop roosting even still light out. So I guess she doesn't feel good... I saw she was eating and drinking. No sneezing, wooing, bubbling or anything. Just swelling. I searched "swelling face" on BYC. She might have sinus infection??? She is inside house now and got ACV water. What I can do for her???