Where can I find an avian food supplement that's call Nutri-Diet?
The only piece I could find called Nutri Diet was some kind of live fish food You might want to double check the christen or the spelling. As someone mentioned the only thing I ever heard of for birds is Nutiberries and those are widely available within bird or pet stores.
Do you mean Nutri Berries? They are made by Lafaber?
You can buy them at most Bird supply places. If you do not have a place local you can writ on line'
is this what you mean
http://www.amazon.com/Lafebers-Nutri-Ber...
I have never fed them as a diet i hold used along with other foods. And Always added their veggies and fruits.
You can likely find them possibly cheaper than that contact the company and look for a local retailer
http://www.lafeber.com/
Answers: Pet-co, petsmart, walmart. maybe one of those.
here are some search results