Thanks for the kind words. George eats Zupreem as a staple as well as the most complete variety of nuts and veggies I can manage and a bean mix with pasta and rice for dinner sometimes. He also gets a very small piece of apple and a few sips of orange juice every day. And lots of love. He mostly lives on a shoulder and is very low stress. That probably has a lot to do with it. He'll fall asleep sideways in your hand in five minutes. I think he's just too mellow to have bad feathers
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I have ordered Roudy Bush to try and also play to try Harrisons as they are highly rated. My issue with the Harrisons is that they bond their calcium to an aluminum silicate, which while it makes bioabsorption easy is also dumping silicates and aluminum into the bird and I am not big on that and want to do more research about how well parrots are able to eliminate aluminum because mammals handle it poorly. I'd like to see a calcium citrate solution with some kind of better catalyst as a delivery system. Lets not forget that a bird's bone structure is very light to begin with and if anything should be in a higher volume it is keratin and not calcium. Between beak feathers and skin, per weight, there is much more keratin on a bird and I don't see enough of it in current bird foods and am considering some solutions myself. Current ideas include fish scales/skin and some shrimps ground into a fine pulp with couscous and a bit of oregano, which he loves.JM2C
(I was a fish nutrition nut when I had fish. I got some serious results from my ideas which were often ridiculed but nobody could argue with the results).
Don't mind the circle it was to show where he'd injured is tail fin and torn it slightly the previous evening durring a husband and wife disagreement on an old forum years ago but note the exceptionally thick scales and fins for Angels.
I want to accomplish this with my birds. Damaged scales and skin also healed at, at very least, a 3X rate on this diet with fish. They also grew to a much larger and robust size than siblings fed a more common lesser diet.
I know birds are happier when they know they have nice feathers. They enjoy seeing their own feather quality in the mirror and the more they are happy and like you the more perfect they try to keep them. This makes me think thicker more luxurious feathers and beak would also be a morale booster in addition to a health booster for parrots.
Oh and also my Senegal likes to take showers quite a lot and asks to shower and preens himself a lot. 
