The bird store recently took in a white cap pionus that needs to be rehomed. The owner told me that I could help evaluate the bird for suitability to be placed into a companion situation. That made me feel trusted.
I sat with her today for about a half an hour. She seems nervous, but not aggressive. I just let her stay in her cage with the door opened. She did not try to climb outside of the cage. She did end up taking a few peanuts from my hand. At first I hung one through the cage bars, which she eventually picked at and then ate. Then I put it in my hand with my hand held like a fist and the nut sticking up out of my hand, so that she would not think that my fingers might be able to grab her. (This idea came from a post Jenny once made.)
After that, she took a peanut from my fingers but dropped it repeatedly. Finally, she took it and then walked over to her perch to eat it. Lastly, she was taking shelled pine nuts, but just throwing them down.
She made no attempts to bite, but she did peck at my fingers very gently with her beak.
They did not sell her as a baby, but they did surgically sex her. She is a hen. Her name is Levi.
I hope I can help without making her more frightened. It appears to me she has been very well cared for. Her feathers are beautiful. She is leary of people, but she doesn't know any of us. She appears to have been handled gently.