Have a bantam chicken with respiratory problem. One nasal cavity closes completely shut with a large discharge which never clears up. When this large chuck of yellow smelling discharge is removed the nasal cavity is large bloody looking and never heals. This discharge is yellow almosts appears sometimes like a piece of corn and about the size of tip of your little finger and smells of infection. She shakes her head and scratches @ her nasal area. For over 8 months have been putting sulfadimethoxine & poultry electrolyte in her water. Then 3 months ago wrote to this forum and received advise to try injecting LA200 Liquamycin & VetR in her nasal cavity which I have been doing for approx 2x a week but does not seem to help. She is eating/drinking okay and appears okay otherwise.