they are all complete meals, which means in theory you can feed just the fruit pellets, just the plumage enhancer or just the museli and they will be getting the same nutrition as if you were giving them extra supplements. However, feeding just one sort would be like us having the same meal every day, we'd get fed up with it, so mix and match them to give them a change. You don't actually have to give fruit and veg with AZ pellets either because they are all a complete meal, but of course a lot of us give them fruit and veg as well, again just for the variety. Sorry Mandi, I think I might be repeating what you have said a few times lol.