not trying to pick a fight, just curoius.
My TAG is almost 20 years old, and for as long as I exclusively have known him, he has been fed a LOT of sunflower seeds. At the same time he moved in with me when his original owner deliberately died, and I didn`t chagne his diet much. He still eats mainly morally seed, but I also give him friuts, veggeis, hard boiled eggs, and likely bites of whatever I`m eating, especailly whether it`s sweet.