My one year old silkie hen is sick, I think. She's eating, drinking and acting fine. No lethargy or droopiness. She is however breathing very loudly. Kind of a "popping" noise when she breaths. Sounds like she's congested. She's very loud when she breaths. I first noticed it about a week ago. I know she has double bumblefoot and I am researching how to treat that. Could the bumble foot have anything to do with her breathing? Her eyes are clear and bright. No nasal discharge. She does cough or sneeze but not a whole lot. How do I remedy it? She's in a flock of seven and nobody else is displaying the same symptoms. Help!