My hen is having breathing problems. She is not showing any other symptons. I have tried antibiotics, i have used vetrx to help open up her nasal passages. She has no swelling of nasal cavity, no mucas in her mouth, eyes or nasal areas. Just breathing thru her mouth. She was in a very dusty environment for awhile. Is there anything i can use to break up the sludge accumulated. There are no vets in my area that handle birds. Any help is greatful. Dont want to just sit here and watch her slowly suffocate.