The linnies and the parrotlets have seed-based diet. I offer pellets, but they rarely touch them. I offer plenty of fresh vegetables and sometimes fruits, plus grains (rice, pasta, cous-cous). Lily doesn't really like anything other than her seed, but I still offer the extras; every once in a while she will nibble on it.
Harpo is a pig and eats anything. His diet is pellet-based with LOTS of vegetables, pasta, some fruits, and other grains. I love birds who eat anything... it makes my life so much easier!