Garlic is okay in small amounts. I use one garlic clove diced up very, very small and sometimes mix it in with three days worth of chopped veggie mash. I would never give a whole clove of garlic to a bird -- it could burn their crop. It's strong stuff. In moderation it can have antibacterial and immune system boost qualities. If it is a mix of spices, I'd also be looking at ingredients for salt content. Remember that dried spices are stronger, by weight, than fresh, because of the loss of moisture.