I have a 10 month old Easter egger who is wheezing this morning and making a little high pitched cough or sneeze. She is just finishing up a molt but otherwise seems to have her normal energy and appetite and poops are normal. I have two other hens (another ee and a barred rock) who both seem fine. Any guesses on what it might be and what I should do to treat. I don't think I can get her to a vet on Sunday.