Is this a vitamin deficiency?

[Natanya]

Sinus infections can cause balance issues in birds. Possibly bacterial, possibly fungal. They can be persistent, and the symptoms can come and go.

 

[crowcreek]

Sinus infections can cause balance issues in birds. Possibly bacterial, possibly fungal. They can be persistent, and the symptoms can come and go.

Wow, that is interesting. I had not heard that. If that was the case is there anything I can do for her for r that?