This is a new one to me. This 1.5 wk old bantam mottled cochin has swelling on her face, and is sneezing occasionally. She otherwise seems fine- peeping, running about, eating, drinking, etc. What might it be, and how should I proceed with her? She is, of course one of the sweetest of the chicks. It always seems to be the ones that you get attached to that get sick.