My chickens seem to have fluid coming out their nose or mouth. Maybe mucus?? Maybe they have a cold. Don't seem to have anyother symtoms except for high peep...maybe a sneeze?? They are laying eating and drinking. They look healthy. Should I be worried? Are there things I should watch for or things I can do for them?? Thank you so much. I am new at this and don't want my girls to get really sick on me!!