I would still take him to the avian vet. Maybe it's just me, but that is what I'd do. There maybe something else going on with him.
That is true, don't feed her avocado! I agree with ireneo, do some research first.
BTW, your bird is beautiful!
My doctor told me to eat a fat free diet for a week. That was hard to do, but I managed.
The thing you might notice is your bowel movements will be different for a while - a little looser.
Did you ever think you maybe dizzy and lightheaded from having diarrhea? Why don't you see if you can get into see a Gastro doctor. They specialize in this. The doctor really needs to get down to the bottom of this. You have to tell your new doctor how badly you are feeling and he should give you a referral to a Gastro doctor.