Need help! My girl started sneezing a few weeks ago. At first, it was just once a day? I thought it was just dust or just to clear her nose. Progressively got more frequent. Has now developed a gurglgy/congested cough. She is eating. Doesn't act sick. I have 2 others that have not showed any signs at all. Today I separated her and made a "croop tent" to use a vaporizer with Vet Rx in it. She has lost some weight but again she acts fine. Should I just take her to the vet or is there something else I should try first? These are my very first hens and I not very experienced with treating them or what to treat with but her cough today sounds "liquid" Please help!