I think my Sully shows a couple of good examples. His obsession with walking over to his food bowls with finger food I give him so his food won't drop on the floor of his cage is from his former days. When I got him his feet where so filthy and crusted with poop his feet were sore. I wouldn't drop my food either in that case. Now his cage is cleaned everyday and new paper spread. Another example is: first let me explain, I don't let Sully on my arm anymore as he likes to run his tongue across my arm and "latch" on with his beak. (Because of medications I take I can't afford to bleed or get an affection.) I always use his ladder to pick him up as he still doesn't have the ability to fly. Anyway, one day and the only time I did this, I used a stick to try and pick him up to put him back into his cage. Sully saw that stick screamed and ran in sheer terror from the sight of the stick in my hand. Someone must have hit him in one of his other homes because Sully was terrified. I immediately put the stick away and got his ladder to pick him up with all the while telling him how sorry I was that I had scared him. Sully will always have a home with me as long as I am able. No one will every harm him again.